EP0827531A2 - Subtilisin - Google Patents

Subtilisin

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Publication number
EP0827531A2
EP0827531A2 EP96913508A EP96913508A EP0827531A2 EP 0827531 A2 EP0827531 A2 EP 0827531A2 EP 96913508 A EP96913508 A EP 96913508A EP 96913508 A EP96913508 A EP 96913508A EP 0827531 A2 EP0827531 A2 EP 0827531A2
Authority
EP
European Patent Office
Prior art keywords
subtilase
residues
subtilisin
composition according
enzyme
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96913508A
Other languages
English (en)
French (fr)
Inventor
Jan Klugkist
Peter Markvardsen
Claus Von Der Osten
Laurens Nicolaas Sierkstra
Peter Bauditz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP96913508A priority Critical patent/EP0827531A2/de
Publication of EP0827531A2 publication Critical patent/EP0827531A2/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/52—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from bacteria or Archaea
    • C12N9/54—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from bacteria or Archaea bacteria being Bacillus

Definitions

  • This invention relates to novel mutant enzymes or enzyme variants useful in formulating detergent compositions and exhibiting improved storage stability while retaining or improving their wash performance; cleaning and detergent compositions containing said enzymes; mutated genes coding for the expression of said enzymes when inserted into a suitable host cell or organism; and such host cells transformed therewith and capable of expressing said enzyme variants.
  • proteases In the detergent industry enzymes have for more than 30 years been implemented in washing formulations. Enzymes used in such formulations comprise proteases, lipases, amylases, cellulases, as well as other enzymes, or mixtures thereof. Commercially most important are proteases. Although proteases have been used in the detergent industry for more than 30 years, much remains unknown as to details of how these enzymes interact with substrates and/other substances present in e .g. detergent compositions. Some factors related to specific residues and influencing certain properties, such as oxidative and thermal stability in general have been elucidated, but much remains to be found out. Also, it is still not exactly known which physical or chemical characteristics are responsible for a good washing performance or ability of a protease in a specific detergent composition.
  • proteases have for the most part been found by isolating proteases from nature and testing them in detergent formulations.
  • Enzymes cleaving the amide linkages in protein substrates are classified as proteases, or (interchangeably) Z peptidases (see Walsh, 1979, Enzymatic Reaction Mechanisms. W.H. Freeman and Company, San Francisco, Chapter 3) .
  • Bacteria of the Bacillus species secrete two extracellular species of protease, a neutral, or metalloprotease, and an alkaline protease which is functionally a serine endopeptidase and usually referred to as subtilisin. Secretion of these proteases has been linked to the bacterial growth cycle, with greatest expression of protease during the stationary phase, when sporulation also occurs. Joliffe et al . (1980) J. Bacteriol 141 1199-1208, have suggested that Bacillus proteases function in cell wall turnover.
  • a serine protease is an enzyme which catalyses the hydrolysis of peptide bonds, and in which there is an essen ⁇ tial serine residue at the active site (White, Handler and Smith, 1973 "Principles of Biochemistry, " Fifth Edition, McGraw-Hill Book Company, NY, pp. 271-272) .
  • the bacterial serine proteases have molecular weights in the 20,000 to 45,000 range. They are inhibited by diisopropyl-fluorophosphate. They hydrolyse simple terminal esters and are similar in activity to eukaryotic chymotrypsin, also a serine protease.
  • alkaline protease covering a sub-group, reflects the high pH optimum of some of the serine proteases, from pH 9.0 to 11.0 (for review, see Priest (1977) Bacteriological Rev. 41 711-753) .
  • subtilisin-like proteases A sub-group of the serine proteases tentatively designated subtilases has been proposed by Siezen et al . , Protein Engng. 4 (1991) 719-737. They are defined by homology analysis of more than 40 a ino acid sequences of serine proteases previously referred to as subtilisin-like proteases. A subtilisin was previously defined as a serine protease produced by Gram-positive bacteria or fungi, and according to Siezen et al . now is a subgroup of the subtilases. A wide variety of subtilisins have been identified, and the amino acid sequence of a number of subtilisins have been determined.
  • subtilisins from Bacillus strains, namely, subtilisin 168, subtilisin BPN 1 , subtilisin Carlsberg, subtilisin Y, subtilisin a ylosacchariticus, and mesentericopeptidase (Kurihara et al . (1972) J. Biol . Chem. 247 5629-5631; Wells et al . (1983) Nucleic Acids Res. 11 7911-7925; Stahl and Ferrari (1984) J.Bacteriol . 159 811-819, Jacobs et al . (1985) Nucl . Acids Res. 13 8913-8926; Nedkov et al . (1985) Biol . Chem.
  • Hoppe-Seyler 366 421-430 Svendsen et al . (1986) FEBS Lett. 196 228-232) , one subtilisin from an actinomycetales, thermitase from ⁇ ie ⁇ oactinomyces vulgaris (Meloun et al . (1985) FEBS Lett. 198 195-200), and one fungal subtilisin, proteinase K from Tri tirachium album (Jany and Mayer (1985) Biol . Chem. Hoppe-Seyler 366 584-492) . for further reference Table I from Siezen et al . has been reproduced below.
  • subtilisins are well-characterized physically and chemically. In addition to knowledge of the primary struc ⁇ ture (amino acid sequence) of these enzymes, over 50 high resolution X-ray structures of subtilisins have been deter ⁇ mined which delineate the binding of substrate, transition state, products, at least three different protease inhibitors, and define the structural consequences for natural variation (Kraut (1977) Ann. Rev. Biochem. 46 331- 358) .
  • substrate should be interpreted in its broadest form as comprising a compound containing at least one peptide bond susceptible to hydrolysis by a subtilisin protease.
  • product should in the context of this invention be interpreted to include the products of a hydrolysis reaction involving a subtilisin protease.
  • a product may be the substrate in a subsequent hydrolysis reaction.
  • subtilases I-SI
  • subtilisins such as subtilisin 168, subtilisin BPN 1 , subtilisin Carlsberg (ALCALASE ® , NOVO NORDISK A/S) , and subtilisin DY.
  • subtilases I-S2 A further subgroup of the subtilases I-S2, is recognised by Siezen et al. (supra) .
  • Sub-group I-S2 proteases are described as highly alkaline subtilisins and comprise enzymes such as subtilisin PB92 (MAXACAL ® , Gist- Brocades NV) , subtilisin 309 (SAVINASE ® , NOVO NORDISK A/S) , subtilisin 147 (ESPERASE ® , NOVO NORDISK A/S) , and alkaline elastase YaB.
  • a subtilase variant or mutated subtilase means a subtilase that has been produced by an organism which is expressing a mutant gene derived from a parent microorganism which possessed an original or parent gene and which produced a corresponding parent enzyme, the parent gene having been mutated in order to produce the mutant gene from which said mutated subtilisin protease is produced when expressed in a suitable host.
  • EP-A-130 756 (GENENTECH) (corresponding to US r
  • Reissue Patent No. 34,606 (GENENCOR) ) relating to site specific or randomly generated mutations in "carbonyl hydrolases" and subsequent screening of the mutated enzymes for various properties, such as k ⁇ /lC., ratio, pH-activity profile, and oxidation stability.
  • This publication reveals that site-specific mutation is feasible, and that mutation of subtilisin BPN 1 in certain specified positions, i.e. ⁇ r, 32 Asp, 155 Asn, 10 Tyr, 222 Met, 166 Gly, "His, 169 Gly, 189 Phe, 33 Ser, 221 Ser, 21 Tyr, 156 Glu or 152 Ala, provide for enzymes exhibiting altered properties. Since these positions all except position -1 were known to be involved in the functioning of the enzyme prior to the filing of the application, and therefore evident to select, this application does not contribute much to solving the problem of deciding where to introduce mutations in order to obtain enzymes with desired properties.
  • EP-A-214 435 (HENKEL) relating to cloning and expression of subtilisin Carlsberg and two mutants thereof.
  • HENKEL relating to cloning and expression of subtilisin Carlsberg and two mutants thereof.
  • no reason for mutation of 158 Asp to 158 Ser and 161 Ser to 161 Asp is provided.
  • the positions so identified are: 124 Met, 222 Met, 104 Tyr, 152 Ala, 156 Glu, 166 Gly, 169 Gly, 189 Phe, 21 Tyr. Also 155 Asn, 21 Tyr, 22 Thr, 24 Ser, 32 Asp, 33 Ser, 36 Asp, 46 Gly, 48 Ala, 49 Ser, 50 Met, 77 Asn, 87 Ser, 94 Lys, 95 Val, 96 Leu, 107 Ile, 110 Gly, 170 Lys, 171 Tyr, 12 Pro, 197 Asp, 199 Met, 20 Ser, 213 Lys, and 221 Ser, which positions are identified as being expected to influence various properties of the enzyme. Also, a number of mutations are exemplified to support these suggestions.
  • the inventors In addition to single mutations in these positions the inventors also performed a number of multiple mutations. Further the inventors identify 215 Gly, 67 His, 126 Leu, 135 Leu, and amino acid residues within the segments 97-103, 126-129, 213-215, and 152-172 as having interest, but mutations in any of these positions are not exemplified.
  • EP-A-251 446 suggest to substitute 170 Lys (in subtilisin BPN', type I-Sl) , specifically they suggest to introduce Glu or Arg for the original Lys. It appears that the Glu variant was produced and it was found that it was highly susceptible to autolytic degradation (cf. pages 48, 121, 123 (Table XXI includes an obvious error, but indicates a reduction in autolysis halftime from 86 to 13 minutes) and Fig. 32) .
  • EP-A-260 105 describes modification of certain properties in enzymes containing a catalytic triad by selecting an amino acid residue within about 15 A from the catalytic triad and replace the selected amino acid residue with another residue.
  • Enzymes of the subtilase type described in the present specification are specifically mentioned as belonging to the class of enzymes containing a catalytic triad.
  • In subtilisins positions 222 and 217 are indicated as preferred positions for replacement.
  • Russel and Fersht discuss the results of their experiments and present rules for changing pH-activity profiles by mutating an enzyme to obtain changes in surface charge.
  • WO-A-88/08028 (Genex) and WO-A-88/08033 (Amgen) both relate to modifications of amino acid residues in the calcium binding sites of subtilisin BPN' .
  • the enzyme is said to be stabilized by substituting more negatively charged residues for the original ones.
  • EP-A-525 610 SOLVAY
  • WO-A-94/02618 GIST-BROCADES N.V.
  • a number of position 164 (170 if using BPN 1 numbering) variants of the I-S2 type subtilisin PB92 are described. Examples are provided showing substitution of Met, Val, Tyr, lie, for the original Arg. Wash performance testing in powder detergents of the variants indicates a slight improvement. Especially for the lie variant wash performance tests on cacao an improvement of about 20-30% is indicated. No stability data are provided.
  • protes such as subtilisins have found much utility in industry, particularly in detergent formulations, as they are useful for removing proteinaceous stains.
  • proteases are known to be commercially available and many of them are marketed in large quantities in many countries of the world:
  • Subtilisin BPN 1 or Novo available from e.g. SIGMA, St. Louis, U.S.A.
  • Subtilisin Carlsberg marketed by NOVO NORDISK A/S (Denmark) as ALCALASE ® and by IBIS (Holland) as MAXATASE ® ; Both of these belong to subtilase subgroup I-SI.
  • subtilase sub-group I-S2 the following are known to be marketed:
  • a protein engineered variant of this enzyme is marketed as DURAZYM ® .
  • Enzymes closely resembling SAVINASE ® such as subtilisin PB92, MAXACAL ® marketed by Gist-Brocades N.V. (a protein engineered variant of this enzyme is marketed as MAXAPEM ® ) , OPTICLEAN ® marketed by SOLVAY et Cie. and PURAFECT ® marketed by GENENCOR International.
  • subtilisins may be used in combination with other enzymes active against other substrates, and the selected subtilisin should possess stability towards such enzymes, and also the selected subtilisin preferably should not catalyze degradation of the other enzymes.
  • the chosen subtilisin should be resistant to the action from other components in the detergent formulation, such as bleaching agents, oxidizing agents, etc., in particular an enzyme to be used in a deter- gent formulation should be stable with respect to the oxidi ⁇ zing power, calcium binding properties, and pH conditions rendered by the non-enzymatic components in the detergent during storage and in the wash liquor during wash.
  • the ability of an enzyme to catalyze the degradation of various naturally occurring substrates present on the objects to be cleaned during e.g. wash is often referred to as its washing ability, washability, detergency, or wash performance. Throughout this application the term wash performance will be used to encompass this property.
  • Naturally occurring subtilisins have been found to possess properties which are highly variable in relation to their washing power or ability under variations in parame ⁇ ters such as pH.
  • active system tensides, surfactants, bleaching agent, etc.
  • builders etc.
  • an enzyme possessing desirable properties at low pH and low I may be less attractive at more alkaline conditions and high I, or an enzyme exhibiting fine properties at high pH and high I may be less attractive at low pH, low I conditions.
  • the storage stability differs between the enzymes, but it has further been found that a specific enzyme exhibits large variations in storage stability in respect of different detergent formulations, dependent upon a number of parameters, such as pH, pi, bleach system, tensides, etc., and upon the physical state of the detergent compositions, which may be in powder, dust, or liquid form. Furthermore it may be concentrated or dilute.
  • a specific enzyme exhibits large variations in storage stability in respect of different detergent formulations, dependent upon a number of parameters, such as pH, pi, bleach system, tensides, etc., and upon the physical state of the detergent compositions, which may be in powder, dust, or liquid form. Furthermore it may be concentrated or dilute.
  • the advent and development of recombinant DNA techniques has had a profound influence in the field of protein chemistry.
  • a subtilisin enzyme typically comprises about 275 amino acid residues. Each residue is capable of being 1 out of 20 possible naturally occurring amino acids. Therefore one very serious draw-back in that procedure is the very large number of mutations generated that have to be submitted to a number of preliminary screenings to determine their properties.
  • subtilase variant having improved storage stability and/or improved performance in detergent compositions can be obtained by substituting one or more amino acid residues situated in, or in the vicinity of a hydrophobic domain of the parent subtilase for an amino acid residue more hydrophobic than the original residue, said hydrophobic domain comprising the residues corresponding to residues P129, P131, 1165, Y167, Y171 of BLS309 (in BASBPN numbering) , and said residues in the vicinity thereof comprises residues corresponding to the residues E136, G159, S164, S164, R170, A194 and 195 of BLS309 (in BASBPN numbering) , with the exception of the R170M, R170I and R170V variants of BABP92.
  • the present invention relates consequently in its first aspect to enzyme variants exhibiting improved stability and/or wash performance in detergents, in particular in liquid detergents, especially concentrated liquid detergents, and in soap bars.
  • the invention in its second aspect relates to DNA constructs capable of expressing the enzymes of the first aspect, when inserted in a suitable manner into a host cell that subsequently is brought to express the subtilisin en ⁇ zyme(s) of the first aspect.
  • the invention in a third aspect relates to the production of the subtilisin enzymes of the invention by inserting a DNA construct according to the second aspect into a suitable host, cultivating the host to express the desired subtilase enzyme, and recovering the enzyme product.
  • the invention relates, in part, but is not limited to, mutants of the genes expressing the subtilase sub-group I-S2 enzymes and the ensuing enzyme variants, as indicated above.
  • subtilase gene variants encompassed by the invention are such as those of the subtilase subgroup I-SI, e.g. Subtilisin BPN' , and Subtilisin Carlsberg genes and ensuing variant Subtilisin BPN 1 , Proteinase K, and Subtilisin Carlsberg enzymes, which exhibit improved stability and/or wash performance in detergents. Still further subtilase gene variants encompassed by the invention are such as Proteinase K and other genes and ensuing variant Proteinase K, and other subtilase enzymes, which exhibit improved stability and/or performance in detergents. Other examples of parent subtilase enzymes that can be modified in accordance with the invention are listed in Table I.
  • the invention relates to the use of the mutant enzymes in cleaning compositions and cleaning compositions comprising the mutant enzymes, especially detergent compositions comprising the mutant subtilisin enzymes.
  • the invention relates to liquid detergent compositions, especially concentrated liquid detergents and to soap bars comprising such enzyme variants.
  • Gly 195 Glu or G195E a deletion of glycine in the same position is:
  • Gly 195 * or G195* and insertion of an additional amino acid residue such as lysine is:
  • Bacteria Gram-positive Bacillus subtilis 168 apr A subtilisin 1168,apr ABSS168 Bacillus a yloliquefaciens apr subtilisin BPN' (NOVO) BASBPN Bacillus subtilis DY subtilisin DY BSSDY
  • Bacillus subtilis IF03013 ispl intracell.ser. prot.l BS1SP1 Bacillus subtilis A50 intracell.ser. prot. BSIA50 Bacillus thuringiensi ⁇ extracell. ser. prot. BTFINI Bacillus cereus extracell. ser. prot. BCESPR Nocardiopsis rougevillei alkaline ser. prot. NDAPII Thermoactinomyces vulgaris - thermitase TVTHER Enterococcus faecalis cylA cytolysin component A EFCYLA
  • Organism cDNA,gene enzyme acronym Streptomyces rutgerse ⁇ sis - proteinase D SRESPD Archaea halophilic strain 172P1 halophil extra, prot. ARB172 (Table I, continued) Organism cDNA,gene enzyme acronym
  • Tritirachium album proT proteinase T TAPROT A ⁇ pergillu ⁇ oryzae alkaline protease AOALPR Malbranchea pulchella thermomycolin MPTHMY Acremonium chry ⁇ ogenum alp alkaline protease ACALPR Yeasts
  • Microbiol . 54 231-238 (M24767; the sequence from strain Wg2 differs in 44 positions, including 18 differences in the protease domain, and a deletion of residues 1617-1676) . Kiwaki et al . (1989) Mol . Microbiol . . 3 359-369 (X14130; the sequence from strain NCD0763 differs in 46 positions, including 22 in the protease domain, and a deletion of residues 1617-1676) . 2o
  • HSIPC2 Smeekens and Steiner (1990) J " . Biol . Chem. 265 2997-3000 (J05252) . Seidah et al . (1990) DNA Cell Biol . 9 415-424 (the sequence of mouse pituitary PC2 protease differs in 23 positions,including seven in the protease domain: I4F, S42[2]Y, E45D, N76S, D133E, V134L and G239[1]D). MMPPC3 Smeekens et al . (1991) Proc. Natl . Acad. Sci . USA 88 340-344 (M58507) . Seidah et al. (1990) DNA Cell Biol . 9 415-424 (M55668/M55669; partial sequence).
  • Fig. 1 shows an alignment of a number of the subtilases mentioned in Table I;
  • Fig. 2 is a 3-dimensional representation of subtilisin 309 showing the location of the hydrophobic domain and some the amino acid residues in the vicinity thereof to be substituted according to the invention.
  • subtilases in detergents is improved when amino acid residues situated in the vicinity of a hydrophobic domain comprising the residues P129, P131, 1165, Y167, Y171 of subtilisin 309 are substituted for a more hydrophobic residue.
  • the residues in question are especially E136, G159, S164, R170, A194, and G195.
  • Fig. 2 shows the hydrophobic domain in subtilisin 309 and residues in the vicinity thereof a number of which are to be substituted in order to increase the hydrophobicity of the domain. This may be achieved by substituting hydrophobic residues for non-hydrophobic residues and/or by substituting residues to become even more hydrophobic than in the parent enzyme.
  • the same principle applies to the corresponding hydrophilic domain in other subtilases, the identification of which is within the skills of the average person working in this technical field.
  • Graphic representations like the one in Fig. 2 can be produced for other subtilases to determine the target residues to be substituted according to the invention.
  • Table II was constructed using the alignment shown in Fig. 2. It is obvious that similar or larger tables covering other subtilases may easily be produced by the skilled person.
  • the invention relates to subtilase variants in which the amino acid sequence has been changed through mutating the gene of the subtilisin enzyme, which it is desired to modify (the parent enzyme or gene) , in the codon responsible for the expression of the amino acid residue in positions 129, 131, 165, 167, 171, 136, 159, 164, 170, 194, and 195, which residues are more hydrophobic than the residue(s) in the parent enzyme, especially such hydrophobic residues that comprise a relatively long hydrophobic chain, such as lie, Leu, and Val, whereby, when the mutated gene is expressed, the amino acid residue is substituted by a more hydrophobic residue, which increases the hydrophobicity of the domain as such.
  • Hydrophobic amino acid residues are generally the following: Val (V), He (I), Leu (L) , Met (M) , Phe (F) , Pro (P) and Trp(W). Among these Val, He and Leu are preferred. By looking at Table II and applying the principle of the invention a number of candidates for substitution become clear.
  • positions 136, 159, 164, 167, 170 and 195 For both BASBPN and BLSCAR it seems appropriate to make substitutions in positions 136, 159, 164, 167, 170 and 195.
  • positions 136, 164, 167 and 170 would be the first choices, and positions 159 and 195 also would be a second choice.
  • positions 136, 167, 170, and 195 are the first choice, while positions 159 and 164 are second.
  • positions 159 and 164 are second.
  • TVTHER positions 136, 167 and 194 are the first choices, with 164 as a second one.
  • any hydrophilic or hydrophobic residue that may occupy any of the above mentioned position, meaning that any increase in hydrophobicity seems to be advantageous.
  • a very hydrophilic residue such as the charged residues Arg (R) , Asp (D) , Glu (E) or Lys (K) may be substituted by any residue that is less hydrophilic.
  • Such less hydrophilic residues comprises the residues Gly (G) , Cys (C) , Ser (S) , Ala (A) , Thr (T) , Tyr (Y) , Gin (Q) , His (H) or Asn (N) .
  • Similar considerations can be applied to other subtilases having a hydrophobic domain in this part of the surface of the enzyme.
  • subtilase is defined in accordance with Siezen et al . supra.
  • the subtilases of interest are those belonging to the subgroups I-Sl and I-S2.
  • many 2f of the embodiments of the invention relate to serine proteases of gram-positive bacteria which can be brought into substantially unambiguous homology in their primary structure, with the subtilases listed in Table I above.
  • the present invention also comprises any one or more substitutions in the above mentioned positions in combination with any other substitution, deletion or addition to the amino acid sequence of the parent enzyme. Especially combinations with other substitutions known to provide improved properties to the enzyme are envisaged.
  • Such combinations comprise the positions: 222 (improve oxidation stability) , 218 (improves thermal stability) , substitutions in the Ca-binding sites stabilising the enzyme, e.g. position 76, and many other apparent from the prior art. Furthermore, combinations with the variants mentioned in EP-A-405 901 are also contemplated specifically.
  • Subtilisin BPN 1 Subtilisin Carlsberg, Subtilisin 168, and Subtilisin DY variants:
  • Thermitase variants Q136V, Q136I, Q136L, Q136M, Q136F,
  • Subtilisin 309 Subtilisin 309, Subtilisin 147, and Bacillus PB92 protease variants: E136V, E136I, E136L, E136M, E136F,
  • R170V, R170I both disclaimed for PAPB92
  • variants comprising any of the variants V104N+S101G, K27R+V104Y+N123S+T274A, or N76D+V104A, in combination with any one or more of the substitutions, deletions and/or insertions mentioned above are deemed to exhibit improved properties.
  • Specific combinations to be mentioned are: a) S57P+R170L a') S57P+R170I b) R170L+N218S 2 b ' ) R170I+N218S c) S57P+R170L+N218S
  • the present invention also comprises the use of the mutant enzymes of the invention in cleaning and detergent compositions and such compositions comprising the mutant subtilisin enzymes.
  • cleaning and detergent compositions can in principle have any physical form, but the subtilase variants are preferably incorporated in liquid detergent compositions or in detergent compositions in the form of bars, tablets, sticks and the like for direct application, wherein they exhibit improved enzyme stability.
  • the detergent compositions of the present invention are first of all liquid detergents, especially aqueous liquid detergents having for example a homogeneous physical character, e.g. they can consist of a micellar solution of surfactants in a continuous aqueous phase, so- called isotropic liquids.
  • they can have a heterogeneous physical phase and they can be structured, for example they can consist of a dispersion of lamellar droplets in a continuous aqueous phase, for example comprising a deflocculating polymer having a hydrophilic backbone and at least one hydrophobic side chain, as described in EP-A-346 995 (Unilever) (incorporated herein by reference) .
  • These latter liquids are heterogeneous and may contain suspended solid particles such as particles of builder materials e.g. of the kinds mentioned below.
  • the liquid cleaning and detergent compositions of the invention should have a high electrolyte concentration, such as described in EP-A-328 177, EP-A-359 308, EP-A-328 176, EP-A-346 995 (all Unilever).
  • compositions comprise in addition to any one or more of the subtilisin enzyme variants in accordance to any of the preceding aspects of the invention alone or in combination any of the usual components included in such compositions which are well-known to the person skilled in the art.
  • Such components comprise builders, such as phosphate or zeolite builders, surfactants, such as anionic, cationic, non-ionic or zwitterionic type surfactants, polymers, such as acrylic or equivalent polymers, bleach systems, such as perborate- or amino-containing bleach precursors or activators, structurants, such as silicate structurants, alkali or acid to adjust pH, humectants, and/or neutral inorganic salts.
  • builders such as phosphate or zeolite builders
  • surfactants such as anionic, cationic, non-ionic or zwitterionic type surfactants
  • polymers such as acrylic or equivalent polymers
  • bleach systems such as perborate- or amino-containing bleach precursors or activators
  • structurants such as silicate structurants, alkali or acid to adjust pH, humectants, and/or neutral inorganic salts.
  • compositions of the invention are normally present in the compositions of the invention, such as: A.
  • Optional Cosurfactants are normally present in the compositions of the invention, such as: A.
  • the weight ratio of synthetic anionic surfactant to ethoxylated nonionic surfactant is from 1:1 to 5:1.
  • the compositions have a pH in a 10% by weight solution in water at 20°C of from 7.0 to 9.0, a Critical Micelle Concentration of less than or equal to 200 pp , and an air/water
  • compositions are preferably clear, homogeneous and phase 3c stable, and have good cleaning performance and enzyme stability.
  • VARIOUS COMPONENTS l. Synthetic Anionic Surfactant
  • the liquid detergent compositions of the present invention contain from about 10% to about 50%, preferably from about 15% to about 50%, more preferably from about 20% to 40%, and most preferably from 20% to about 30%, by weight of a natural or synthetic anionic surfactant.
  • Suitable natural or synthetic anionic surfactants e.g. soaps and such as disclosed in US-A-4 285 841, and in US-A-3 929 678.
  • Useful anionic surfactants include the water- soluble salts, particularly the alkali metal, ammonium and alkylolammonium (e.g., monoethanolammonium or triethanol- ammonium) salts, of organic sulfuric reaction products having in their molecular structure an alkyl group containing from about 10 to about 20 carbon atoms and a sulphonic acid or sulphuric acid ester group.
  • water- soluble salts particularly the alkali metal, ammonium and alkylolammonium (e.g., monoethanolammonium or triethanol- ammonium) salts, of organic sulfuric reaction products having in their molecular structure an alkyl group containing from about 10 to about 20 carbon atoms and a sulphonic acid or sulphuric acid ester group.
  • alkyl is the alkyl portion of aryl groups.
  • alkyl is the alkyl portion of aryl groups.
  • these group of synthetic surfactants are the alkyl sulfates, especially those obtained by sulfating the higher alcohols (C 8 -C 18 carbon atoms) such as those produced by reducing the glycerides of tallow or coconut oil; and the alkylbenzene sulfonates in which the alkyl group contains from about 9 to about 15 carbon atoms, in straight chain or branched chain configuration, e.g., those of the type described in U.S. Patents 2 220 099 and 2 477 383.
  • Especially valuable are linear straight chain alkylbenzene sulfonates in which the average number of carbon atoms in the alkyl group is from about 11 to 14.
  • anionic surfactants herein are the water- soluble salts of: paraffin sulfonates containing from 8 to about 24 (preferably about 12 to 18) carbon atoms; alkyl glyceryl ether sulfonates, especially those ethers of C 8 -C 18 alcohols (e.g., those derived from tallow and coconut oil); alkyl phenol ethylene oxide ether sulfates containing from l to about 4 units of ethylene oxide per molecule and from 8 31 to 12 carbon atoms in the alkyl group; and alkyl ethylene oxide ether sulfates containing 1 to 4 units of ethylene oxide per molecule and from 10 to 20 carbon atoms in the alkyl group.
  • Other useful anionic surfactants include the water-soluble salts of esters of o-sulfonated fatty acids containing from 6 to 20 carbon atoms in the fatty acid group and from 1 to 10 carbon atoms in the ester group; water- soluble salts of 2-acyloxy-alkane-l-sulphonic acids containing from 2 to 9 carbon atoms in the acyl group and from 9 to 23 carbon atoms in the alkane moiety; water- soluble salts of olefin sulfonates containing from 12 to 24 carbon atoms; and ⁇ -alkyloxy alkane sulfonates containing from 1 to 3 carbon atoms in the alkyl group and from 8 to 20 carbon atoms in the alkane moiety.
  • Preferred anionic surfactants are the C 10 -C 18 alkyl sulfates and alkyl ethoxy sulfates containing an average of up to 4 ethylene oxide units per mole of alkyl sulfate, C n - C 13 linear alkyl benzene sulfonates, and mixtures thereof.
  • a second optional ingredient is from 2% to 14% preferably from 2% to 8%, most preferably from 3% to 5% by weight, of an ethoxylated nonionic surfactant.
  • the weight ratio of synthetic anionic surfactant (on an acid basis) to nonionic surfactant is from 1:1 to 5:1 preferably from 2:1 to 5:1, most preferably from 3:1 to 4:1. This is to ensure the formation and adsorption of sufficient hardness surfactants at the air/water interface to provide good greasy/oily soil removal.
  • the ethoxylated nonionic surfactant is of the formula R OCzH ,, OH, wherein R 1 is a C 10 -C 16 alkyl group or a C 8 -C 12 alkyl phenyl group, n is from 3 to 9, and said nonionic surfactant has an HLB (Hydrophilic-Lipophilic Balance) of from 6 to 14, preferably from 10 to 13.
  • HLB Hydrophilic-Lipophilic Balance
  • surfactants are more fully described in US-A-4 285 841, and US-A-4 284 532, Particularly preferred are condensation products of C 12 -C 15 alcohols with from 3 to 8 moles of 3a ethylene oxide per mole of alcohol, e.g., C 12 -C 13 alcohol condensed with about 6.5 moles of ethylene oxide per mole of alcohol.
  • nonionic surfactants to be mentioned are APG, EGE and glucamide surfactants.
  • the compositions may be built or unbuilt, and may be of the zero-P type (i.e. not containing any phosphorus containing builders) .
  • the composition may contain in the aggregate for example from 1-50%, e.g. at least about 5% and often up to about 35-40% by weight, of one or more organic and/or inorganic builders.
  • Typical examples of builders include those already mentioned above, and more broadly include alkali metal ortho, pyro, and tripoly-phosphates, alkali metal carbonates, either alone or in admixture with calcite, alkali metal citrates, alkali metal nitrilotriacetates, carboxymethyloxysuccinates, zeolites, polyacetalcarboxylates, and so on.
  • compositions herein contain from 5% to 20%, preferably from 10% to 15%, by weight of a detergency builder which can be a fatty acid containing from 10 to 18 carbon atoms and/or a polycarboxylate, zeolite, polyphoshonate and/or polyphosphate a builder.
  • a detergency builder which can be a fatty acid containing from 10 to 18 carbon atoms and/or a polycarboxylate, zeolite, polyphoshonate and/or polyphosphate a builder.
  • Preferred are from 0 to 10% (more preferably from 3% to 10%) by weight of saturated fatty acids containing from 12 to 14 carbon atoms, along with from 0 to 10%, more preferably from 2% to 8%, most preferably from 2% to 5%, by weight of a polycarboxylate builder, most preferably citric acid, in a weight ratio of from 1:1 to 3:1.
  • the compositions preferably contain sufficient builder to sequester from 2 to 10, preferably from 3 to 8, grains per gallon of hardness.
  • Suitable saturated fatty acids can be obtained from natural sources such as plant or animal esters (e.g., palm kernel oil, palm oil and coconut oil) or synthetically prepared (e.g., via the oxidation of petroleum or by hydrogenation of carbon monoxide via the Fisher-Tropsch process) .
  • suitable saturated fatty acids for use in the compositions of this invention include capric, lauric, myristic, coconut and palm kernel fatty acid.
  • Preferred are saturated coconut fatty acids; from 5:1 to 1:1 (preferably about 3:1) weight ratio mixtures of lauric and myristic acid; mixtures of the above with minor amounts
  • oleic acid e.g., l%-30% of total fatty acid
  • palm kernel fatty acid e.g., l%-30% of total fatty acid
  • compositions herein preferably also contain the polycarboxylate, polyphosphonate and polyphosphate builders described in US-A-4 284 532, Water-soluble polycarboxylate builders, particularly citrates, are preferred of this group.
  • Suitable polycarboxylate builders include the various aminopolycarboxylates, cycloalkane polycarboxylates, ether polycarboxylates, alkyl polycarboxylates, epoxy polycarboxylates, tetrahydrofuran polycarboxylates, benzene polycarboxylates, and polyacetal polycarboxylates.
  • polycarboxylate builders sodium and potassium ethylenediaminetetraacetate; sodium and potassium nitrilotriacetate; the water-soluble salts of phytic acid, e.g., sodium and potassium phytates, disclosed in US-A-1 739 942, the polycarboxylate materials described in US-A-3 364 103; and the water-soluble salts of polycarboxylate polymers and copolymers described in US-A-3 308 067.
  • phytic acid e.g., sodium and potassium phytates
  • Other useful detergency builders include the water-soluble salts of polymeric aliphatic polycarboxylic acids having the following structural and physical characteristics: (a) a minimum molecular weight of about 350 calculated as to the acid form; (b) an equivalent weight of 50 to 80 calculated as to acid form; (3) at least 45 mole percent of the monomeric species having at least two carboxyl radicals separated from each other by not more than two carbon atoms: (d) the site of attachment of the polymer chain of any carboxyl-containing radical being separated by not more than three carbon atoms along the polymer chain from the site of attachment of the next carboxyl-containing radical.
  • Specific examples of such builders are the polymers and copolymers of itaconic acid, aconitic acid, maleic acid, mesaconic acid, fumaric acid, methylene malonic acid, and citraconic acid.
  • Suitable polycarboxylate builders include the water-soluble salts, especially the sodium and potassium salts, of mellitic acid, citric acid, pyromellitic acid, benzene pentacarboxylic acid, oxydiacetic acid, carboxymethyloxysuccinic acid, carboxymethyloxymalonic acid, cis-cyclohexanehexacarboxylic acid, cis-cyclopentane- tetracarboxylic acid and oxydisuccinic acid.
  • water-soluble salts especially the sodium and potassium salts
  • polycarboxylates are the polyacetal carboxylates described in US-A-4 144 226, and US-A-4 146 495.
  • detergency builders include the zeolites, such as the aluminosilicate ion exchange material described in US-A-4 405 483.
  • R-CH(C00H)CH 2 (COOH) i.e. derivatives of succinic acid, wherein R is C 10 -C 20 alkyl or alkenyl, preferably C 12 - C 16 , or wherein R may be substituted with hydroxyl, sulfo, sulfoxy or sulfone substituents.
  • succinate builders are preferably used in the form of their water soluble salts, including the sodium, potassium and alkanolammonium salts.
  • Specific examples of succinate builders include: lauryl succinate, myristyl succinate, palmityl succinate, 2- dodecenyl succinate, and the like.
  • protease can be included in the compositions in amounts in the order of from about 0.1 to 100 GU/mg (e.g. 1-50, especially 5-20 GU/mg) of the detergent formulation, or any amount in a wide range centering at about 0.01-4, e.g. 0.1-0.4 KNPU per g of detergent formulation.
  • the present enzymes may for example be suitable to use the present enzymes at the rate of about 0.25 mg of enzyme protein per litre of wash liquor, corresponding to an enzyme activity of the order of 0.08 KNPU per litre.
  • Corresponding detergent formulations can contain the enzymes in for example an amount of the order of 0.1-0.4 KNPU/g.
  • compositions of the present invention contain from about 0.01% to about 5%, preferably from about 0.1% to about 2%, by weight of the proteolytic enzymes of the invention.
  • the described proteolytic enzyme is preferably included in an amount sufficient to provide an activity of from 0.05 to about 1.0, more preferably from about 0.1 to 0.75, most preferably from about 0.125 to about 0.5,mg of active enzyme per gram of composition.
  • the liquid detergents according to the present invention may comprise An enzyme stabilization system, comprising calcium ion, boric acid, propylene glycol and/or short chain carboxylic acids.
  • the enzyme stabilization system comprises from about 0.5% to about 15% by weight of the composition.
  • the composition preferably contains from about
  • the level of calcium ion should be selected so that there is always some minimum level available for the enzyme, after allowing for complexation with builders etc. in the composition.
  • Any water-soluble calcium salt can be used as the source of calcium ion, including caicium chloride, calcium formate, and calcium acetate.
  • a small 3i amount of calcium ion is often also present in the composition due to calcium in the enzyme slurry and formula water. From about 0.03% to about 0.6% of calcium formate is preferred.
  • a second preferred enzyme stabilizer is polyols containing only carbon, hydrogen and oxygen atoms. They preferably contain from 2 to 6 carbon atoms and from 2 to 6 hydroxy groups. Examples include propylene glycol (especially 1,2-propanediol, which is preferred), ethylene glycol, glycerol, sorbitol, mannitol, and glucose.
  • the polyol generally represents from about 0.5% to 15%, preferably from about 1.5% to about 8%, by weight of the composition.
  • the weight ratio of polyol to any boric acid added is at least 1, more preferably at least 1.3.
  • compositions preferably also contain the water-soluble, short chain carboxylates described in US-A-4 318 818.
  • the formates are preferred and can be used at levels of from about 0. 05% to about 5%, preferably from about 0.2% to about 2%, most preferably from 0.4% to 1.5%, by weight of the composition.
  • Sodium formate is preferred.
  • the compositions herein also optionally contain from about 0.25% to about 5%, most preferably from about 0.5% to about 3%, by weight of boric acid.
  • the boric acid may be, but is preferably not, formed by a compound capable of forming boric acid in the composition.
  • Boric acid is preferred, although other compounds such as boric oxide, borax and other alkali metal borates (e.g., sodium ortho-, meta- and pyroborate, and sodium pentaborate) are suitable.
  • alkali metal borates e.g., sodium ortho-, meta- and pyroborate, and sodium pentaborate
  • Substituted boric acids e.g., phenylboronic acid, butane boronic acid, and p-bromo phenylboronic acid
  • boric acid e.g., phenylboronic acid, butane boronic acid, and p-bromo phenylboronic acid
  • the liquid detergent compositions of the present invention may be aqueous liquids or non-aqueous liquids.
  • aqueous liquids When the are aqueous liquids, they contain from about 15% to 3 ⁇ l about 60%, preferably from about 25% to about 45%, by weight of water.
  • Optional cosurfactants for use with the above ethoxylated nonionic surfactants include amides of the formula 0 R 2
  • R 1 is an alkyl,hydroxyalkyl or alkenyl radical containing from 8 to 20 carbon atoms
  • R 2 and R 3 are selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, and said radicals additionally containing up to 5 ethylene oxide units, provided at least one of R 2 and R 3 contains a hydroxyl group.
  • Preferred amides are the C 8 -C 20 fatty acid alkylol amides in which each alkylol group contains from 1 to 3 carbon atoms, and additionally can contain up to 2 ethylene oxide units. Particularly preferred are the C 12 -C 16 fatty acid monoethanol and diethanol amides.
  • amides are preferably present at a level such that the above ethoxylated nonionic surfactant and amide surfactant is in a weight ratio of from 4:1 to 1:4, preferably from 3:1 to 1:3.
  • Preferred and optional cosurfactants, used at a level of from 0.15% to 1%, are the quaternary ammonium, amine and amine oxide surfactants described in US-A-4 507 219.
  • the C 10 -C 14 alkyl trimethylammonium salts are preferred, e.g., decyl trimethylammonium methylsulfate, lauryl trimethylammonium chloride, myristyl trimethylammonium bromide, and coconut trimethylammonium chloride and methylsulfate. From 0.2% to 0.8% of monoalkyl 39 trimethylammonium chloride is preferred.
  • compositions herein preferably contain from 0 to about 10%, preferably from 0 to about 6%, by weight on an acid basis, of a tartrate succinate builder material selected from the group consisting of:
  • X is a salt-forming cation
  • compositions can also optionally contain from about 0 to about 0.04 moles, preferably from about 0.01 to 0.035 moles, more preferably from about 0.015 to about 0.03 moles, per 100 grams of composition of an alkanolamine selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine,and mixtures thereof.
  • an alkanolamine selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine,and mixtures thereof.
  • Low levels of the alkanolamines, particularly monoethanolamine are preferred to enhance product stability, detergency performance, and odour. However, the amount of alkanolamine should be minimized for best chlorine bleach compatibility.
  • compositions contain sodium ions, and preferably potassium ions,at a level sufficient to neutralize the anionic species and provide the desired product pH.
  • D. Suds Suppressor Another optional component for use in the liquid detergents herein is from 0 to about 1.5%, preferably from about 0.5% to about 1.0%, by weight of silicone based suds suppressor agent.
  • Silicones are widely known and taught for use as highly effective suds controlling agents.
  • US-A- 3 455 839 relates to compositions and processes for defoaming aqueous solutions by incorporating therein small amounts of polydimethylsiloxane fluids.
  • Useful suds controlling silicones are mixtures of silicone and silanated silica as described, for instance, in German Patent Application DE-A-2 124 526.
  • Silicone defoamers and suds controlling agents have been successfully incorporated into granular detergent compositions by protecting them from detergent surfactants as in U.S. Patents 3 933 672 and 4 652 392.
  • a preferred silicone based suds suppressor for use herein is a suds suppressing amount of a suds controlling agent consisting essentially of:
  • polydimethylsiloxane fluid having a viscosity of from about 20 cs. to about 1500 cs. at 25°C;
  • suds suppressing amount is meant that the for ulator of the composition can select an amount of this Vo suds controlling agent that will control the suds to the extent desired.
  • the amount of suds control will vary with the detergent surfactant selected. For example, with high sudsing surfactants, relatively more of the suds controlling agent is used to achieve the desired suds control than with low foaming surfactants.
  • the detergent compositions of the invention may also contain further enzymes.
  • lipase can usefully be added in the form of a (granular composition (alternatively a) solution or a slurry of lipolytic enzyme with carrier material (e.g. as in EP-A-258 068 (Novo Nordisk A/S) .
  • the added amount of lipase can be chosen within wide limits, for example 50 to 30,000 LU/g per gram of the surfactant system or of the detergent composition, e.g. often at least 100 LU/g, very usefully at least 500 LU/g, sometimes preferably above 1000, above 2000 LU/g or above 4000 LU/g or more, thus very often within the range of 50-4000 LU/g, and possibly within the range of 200-1000 LU/g.
  • lipase units are defined as they are in EP-A-258 068.
  • the lipolytic enzyme can be chosen among a wide range of lipases.
  • Suitable, in particular, are for example the following commercially available lipase pre ⁇ parations: Lipolase ® Novo Nordisk A/S, Amano lipases CE, P, B, AP, M-AP, AML, and CES, and Meito lipases MY-30, OF, and PL, also Esterase ® MM, Lipozym, SP225, SP285 (all Novo Nordisk) , Saiken lipase, Enzeco lipase, Toyo Jozo lipase and Diosynth lipase (Trade Marks), Lumafast ® (Genecor Inc.), Lipomax ® (Gist-Brocades N.V.), and lipases as described in WO-A-94/03578 (Unilever)
  • Amylase can for example be used when desired, in an amount in the range of about 1 to about 100 MU (maltose units) per gram of detergent composition (or 0.014-1.4, e.g. 0.07-0.7, KNU/g (Novo units)).
  • Amylases suitable are for example Termamyl ® and BAN (Novo Nordisk A/S) .
  • Cellulase can for example be used when desired, in an amount in the range of about 0.3 to about 35 CEVU units per gram of the detergent composition. Suitable cellulases are for example Celluzyme ® and Carezyme ® (Novo Nordisk A/S) .
  • enzymes contemplated to be used in the present invention are oxidases and peroxidases.
  • Optional Components include soil removal agents, soil release polymers, antiredeposition agents such as tetraethylene pentamine ethoxylate (from about 0.5% to 3%, preferably from about 1% to about 3%, by weight) , suds regulants, hydrotropes such as sodium cumene sulfonate, opacifiers, antioxidants, bactericides, dyes, perfumes, and brighteners known in the art.
  • Such optional components generally represent less than about 15%, preferably from about 0.5% to 10%, more preferably from about 1% to about 10%, by weight of the composition.
  • compositions may contain from 0% to about 8%, preferably from 0% to about 5%, by weight of a C 12 -C 14 alkenyl succinic acid or salt thereof.
  • These materials are of the general formula R-CH(COOX)CH 2 (COOX) , wherein R is a C 12 -C 14 alkenyl group and each X is H or a suitable cation, such as sodium, potassium, ammonium or alkanolammonium (e.g., mono-, di-, or tri-ethanolammonium) .
  • R is a C 12 -C 14 alkenyl group and each X is H or a suitable cation, such as sodium, potassium, ammonium or alkanolammonium (e.g., mono-, di-, or tri-ethanolammonium) .
  • Specific examples are 2- dodecenyl succinate (preferred) and 2-tetradecenyl succinate.
  • compositions herein optionally contain from about 0.1% to about 1%, preferably from about 0.2% to about 0.6%, by weight of water-soluble salts of ethylenediamine tetramethylenephosphonic acid, diethylenetriamine pentamethylenephosphonic acid, ethylenediamine tetraacetic acid (preferred) , or diethylenetriamine pentaacetic acid (most preferred) to enhance cleaning performance when pretreating fabrics.
  • the detergent compositions may contain from 1-35% of a bleaching agent or a bleach precursor or a system comprising bleaching agent and/or precursor with ac ⁇ tivator therefor.
  • lather boosters anti-corrosion agents, soil-suspending agents, sequestering agents, anti-soil redeposition agents, and so on.
  • compositions herein preferably contain up to about 10% of ethanol.
  • the instant composition usually has a pH, in a 10% by weight solution in water at 20°C, of from about 7.0 to 9.0, preferably from about 8.0 to about 8.5.
  • compositions also may have a Critical Micelle Concentration (CMC) of less than or equal to 200 parts per million (ppm) , and an air/water Interfacial Tension above the CMC of less than or equal to 32, preferably less than or equal to about 30, dynes per centimetre at 35°C in distilled water.
  • CMC Critical Micelle Concentration
  • ppm parts per million
  • ppm parts per million
  • ppm parts per million
  • compositions of the invention can be used for the washing of textile materials, especially, but without *i3 limitation cotton and polyester based textiles and mixtures thereof.
  • a use-rate from about 1 to 10 g/1, e.g. from about 3-6 g/1, of the detergent formulation is suitable for use in the case when the formulations are substantially as in the Examples.
  • a detergent composition formulated as an aqueous detergent liquid comprising anionic surfactant, nonionic surfactant, humectant, organic acid, caustic alkali, with a pH adjusted to a value between 9 and 10.
  • a detergent composition formulated as a non-aqueous detergent liquid comprising a liquid nonionic surfactant consisting essentially of linear alkoxylated primary alcohol, triacetin, sodium triphosphate, caustic alkali, perborate monohydrate bleach precursor, and tertiary amine bleach activator, with a pH adjusted to a value between about 9 and 10.
  • An enzymatic liquid detergent composition formulated to give a wash liquor ionic strength of 0.03 or less, e.g. 0.02 or less, when used at a rate corresponding to 0.4-0.8 g/1 surfactant.
  • An enzymatic liquid detergent composition formulated to give a wash liquor ionic strength of 0.01 or more, e.g. 0.02 or more, when used at a rate corresponding to 0.4-0.8 g/1 surfactant.
  • subtilase variants of the present invention can also be usefully incorporated in detergent composition in the form of bars, tablets, sticks and the like for direct application to fabrics, hard surfaces or any other surface.
  • they can be incorporated into soap or soap/synthetic compositions in bar form, wherein they exhibit a remarkable enzyme stability.
  • Detergent composition in the form of bars, tablets, sticks and the like for direct application are for example described in South African Patent 93/7274, incorporated herein by reference.
  • the preferred bars in accordance with this invention comprise, in addition to the subtilase variant: i) 25 to 80%, most preferably 25 to 70%, by weight of detergent active which is soap or a mixture of soap and synthetic detergent.active, reckoned as anhydrous; ii) 0 to 50 % and, most preferably, 10 to 30% by weight of water; iii) 0 to 35% and, most preferably, 0.1 to 30% by weight filler.
  • the amount of subtilase variant to be included in such compositions of the invention is such that it corresponds with a proteolytic activity of 0.1 to 100 GU/mg based on the composition, preferably 0.5 to 20GU/mg, most preferably 1.0 to lOGU/mg, where GU/mg is glycine unit per milligram.
  • subtilase genes Many methods for introducing mutations into genes are well known in the art. After a brief discussion of cloning subtilase genes, methods for generating mutations in both random sites, and specific sites, within the subtilase gene will be discussed.
  • subtilase may be cloned from any of the organisms indicated in Table I, especially gram- positive bacteria or fungus, by various methods, well known in the art. First a genomic, and/or cDNA library of DNA must be constructed using chromosomal DNA or messenger RNA from the organism that produces the subtilase to be studied.
  • homologous, labelled oligonucleotide probes may be synthesi ⁇ zed and used to identify subtilisin-encoding clones from a genomic library of bacterial DNA, or from a cDNA library.
  • a labelled oligonucleotide probe containing sequences homologous to subtilase from another strain of bacteria or organism could be used as a probe to identify subtilase-encoding clones, using hybridization and washing conditions of lower stringency.
  • subtilase-pro ⁇ ducing clones would involve inserting fragments of genomic DNA into an expression vector, .such as a plasmid, transfor ⁇ ming protease-negative bacteria with the resulting genomic DNA library, and then plating the transformed bacteria onto agar containing a substrate for subtilase, such as skim milk. Those bacteria containing subtilase-bearing plasmid will produce colonies surrounded by a halo of clear agar, due to digestion of the skim milk by excreted subtilase.
  • an expression vector . such as a plasmid
  • transfor ⁇ ming protease-negative bacteria with the resulting genomic DNA library
  • subtilase gene has been cloned into a sui ⁇ table vector, such as a plasmid, several methods can be used to introduce random mutations into the gene.
  • One method would be to incorporate the cloned subti- lase gene, as part of a retrievable vector, into a mutator strain of Eschericia coli .
  • Another method would involve generating a single stranded form of the subtilase gene, and then annealing the fragment of DNA containing the subtilase gene with another
  • subtilisin gene from a Bacillus species including the natural promoter and other control sequences could be cloned into a plasmid vector containing replicons for both E. coli and B. subtilis, a selectable phenotypic marker and the M13 origin of replication for production of single-stranded plasmid DNA upon superinfection with helper phage IR1.
  • Single-stranded plasmid DNA containing the cloned subtilisin gene is isolated and annealed with a DNA fragment containing vector sequences but not the coding region of subtilisin, resulting in a gapped duplex molecule.
  • Mutations are introduced into the subtilisin gene either with sodium bisulfite, nitrous acid or formic acid or by replication in a mutator strain of ⁇ X_ coli as described above. Since sodium bisulfite reacts exclusively with cytosine in a single-stranded DNA, the mutations created with this mutagen are restricted only to the coding regions. Reaction time and bisulfite con ⁇ centration are varied in different experiments such that from one to five mutations are created per subtilisin gene on average. Incubation of 10 ⁇ g of gapped duplex DNA in 4 M Na-bisulfite, pH. 6.0, for 9 minutes at 37°C in a reaction volume of 400 ⁇ l, deaminates about 1% of cytosines in the Hi single-stranded region. The coding region of mature subtilisin contains about 200 cytosines, depending on the DNA strand.
  • the reaction time is varied from about 4 minutes (to produce a mutation frequency of about one in 200) to about 20 minutes (about 5 in 200) .
  • the gapped molecules are treated in vitro with DNA polymerase I (Klenow fragment) to make fully double-stranded molecules and fix the mutations. Competent E. coli are then transformed with the mutagenized DNA to produce an amplified library of mutant subtilisins.
  • DNA polymerase I Klenow fragment
  • Amplified mutant libraries can also be made by growing the plasmid DNA in a Mut D strain of E. coli which increases the range of mutations due to its error prone DNA polymerase.
  • the mutagens nitrous acid and formic acid may also be used to produce mutant libraries. Because these chemicals are not as specific for single-stranded DNA as sodium bi ⁇ sulfite, the mutagenesis reactions are performed according to the following procedure. The coding portion of the subti ⁇ lisin gene is cloned in M13 phage by standard methods and single stranded phage DNA prepared. The single-stranded DNA is then reacted with 1 M nitrous acid pH. 4.3 for 15-60 minutes at 23°C or 2.4 M formic acid for 1-5 minutes at 23°C. These ranges of reaction times produce a mutation frequency of from 1 in 1000 to 5 in 1000.
  • a universal primer is annealed to the M13 DNA and duplex DNA is synthesized using the mutagenized single-stranded DNA as a template so that the coding portion of the subtilisin gene becomes fully double-stranded.
  • the coding region can be cut out of the M13 vector with restriction enzymes and ligated into an un-mutagenized expression vector so that mutations occur only in the restriction fragment.
  • subtilase gene Once the subtilase gene has been cloned, and de ⁇ sirable sites for mutation identified and the residue to substitute for the original ones have been decided, these mutations can be introduced using synthetic ⁇ oligonucleotides. These oligonucleotides contain nucleotide sequences flanking the desired mutation sites; mutant nucleotides are inserted during oligonucleotide synthesis. In a preferred method, a single stranded gap of DNA, bridging the subtilase gene, is created in a vector bearing the subtilase gene.
  • the synthetic nucleotide, bearing the desired mutation is annealed to a homologous portion of the single-stranded DNA.
  • the remaining gap is then filled in by DNA polymerase I (Klenow fragment) and the construct is ligated using T4 ligase.
  • DNA polymerase I Klenow fragment
  • T4 ligase A specific example of this method is described in Morinaga et al . , (1984, Biotechnology 2 646- 639). According to Morinaga et al . , a fragment within the gene is removed using restriction endonuclease.
  • the vector/gene now containing a gap, is then denatured and hybridized to a vector/gene which, instead of containing a gap, has been cleaved with another restriction endonuclease at a site outside the area involved in the gap.
  • a single- stranded region of the gene is then available for hybridiza ⁇ tion with mutated oligonucleotides, the remaining gap is filled in by the Klenow fragment of DNA polymerase I, the insertions are ligated with T4 DNA ligase, and, after one cycle of replication, a double -.stranded plasmid bearing the desired mutation is produced.
  • the Morinaga method obviates the additional manipulation of constructing new restriction sites, and therefore facilitates the generation of mutations at multiple sites.
  • U.S. Reissue Patent number 34,606 by Estell et al . , issued May 10, 1994, is able to introduce oligonucleotides bearing multiple mutations by performing minor alterations of the cassette, however, an even greater variety of mutations can be introduced at any one time by the Morinaga method, because a multitude of oligonucleotides, of various lengths, can be introduced.
  • a mutated subtilase gene produced by methods described above, or any alternative methods known in the art can be expressed, in enzyme form, using an expression vector.
  • An expression vector generally 19 falls under the definition of a cloning vector, since an expression vector usually includes the components of a typical cloning vector, namely, an element that permits autonomous replication of the vector in a microorganism independent of the genome of the microorganism, and one or more phenotypic markers for selection purposes.
  • An expression vector includes control sequences encoding a promoter, operator, ribosome binding site, translation initiation signal, and, optionally, a repressor gene or various activator genes.
  • nucleotides encoding a "signal sequence" may be inserted prior to the coding sequence of the gene.
  • a target gene to be treated according to the invention is operably linked to the control sequences in the proper reading frame.
  • Promoter sequences that can be incorporated into plasmid vectors, and which can support the transcription of the mutant subtilase gene include but are not limited to the prokaryotic ⁇ -lactamase promoter (Villa- Kamaroff, et al . (1978) Proc. Natl . Acad. Sci . U. S.A. 75
  • B. subtilis is transfor ⁇ med by an expression vector carrying the mutated DNA. If ex ⁇ pression is to take place in a secreting microorganism such as B. subtilis a signal sequence may follow the translation initiation signal and precede the DNA sequence of interest. The signal sequence acts to transport the expression product to the cell wall where it is cleaved from the product upon secretion.
  • control sequences as defined above is intended to include a signal sequence, when it is present.
  • Other host systems known to the skilled person are also contemplated for the expression and production of the protease variants of the invention.
  • Such host systems comprise fungi, including filamentous fungi, plant, avian and mammelian cells as well as others. £ ⁇
  • B. subtilis 309 and 147 are variants of Bacillus lentus, deposited with the NCIB and accorded the accession numbers NCIB 10309 and 10147, and described in US-A-3 723 250 incorporated by reference herein.
  • E. coli MC 1000 (M.J. Casadaban and S.N. Cohen (1980); J “ . Mol . Biol . 138 179-207), was made r " ,m + by conventional methods and is also described in US Patent Application Serial No. 039,298.
  • proteolytic activity is expressed in Kilo NOVO Protease Units (KNPU) .
  • KNPU Kilo NOVO Protease Units
  • the activity is determined relatively to an enzyme standard (SAVINASE ⁇ ) , and the determination is based on the digestion of a dimethyl casein (DMC) solution by the proteolytic enzyme at standard conditions, i.e. 50°C, pH 8.3, 9 min. reaction time, 3 min. measuring time.
  • DMC dimethyl casein
  • a folder AF 220/1 is available upon request to Novo Nordisk A/S, Denmark, which folder is hereby included by reference.
  • a GU is a Glycine Unit, defined as the proteolytic enzyme activity which, under standard conditions, during a 15-minutes 1 incubation at 40 deg C, with N-acetyl casein as substrate, produces an amount of NH 2 -group equivalent to 1 ⁇ mole of glycine.
  • Enzyme activity can also be measured using the PNA assay, according to reaction with the soluble substrate succinyl-alanine-alanine-proline-phenyl-alanine-para- nitrophenol, which is described in the Journal of American Oil Chemists Society, Rothgeb, T.M., Goodlander, B.D., Garrison, P.H., and Smith, L.A., (1988).
  • a vector suited to a synthetic gene coding for sub ⁇ tilase 309 and its mutants was constructed. It is essen ⁇ tially a pUC19 plasmid [Yanish-Perron and Messing (1985) Gene; 33 103-119] , in which the multiple cloning site has been replaced by a linker containing the restriction sites used to separate five sub-fragments constituting the gene. The new linker was inserted into EcoRI - Hindlll cut pUC19 thereby destroying these sites. The details of this construction are described in WO 92/19729 on pages 25-26 and in figure 1 (sheets 1/7-7/7) thereof, the content of which is hereby included by reference.
  • Each subfragment was made from 6 to 12 oligonu ⁇ cleotides.
  • the oligonucleotides were synthesised on an automatic D ⁇ A synthesizer using phosphoramidite chemistry on a controlled glass support [Beaucage and Carruthers (1981) ; Tetrahedron Letters 22 1859-1869] .
  • the five subfragments were isolated on a 2% agarose gel and inserted into pSX191. The sequence was verified by dideoxynucleotide sequencing. Fragments A-E were isolated and ligated together with KpnI-BamHI cut pSX191. The ligation mixtures were used to transform competent E coli MC1000 r " ,m + selecting for ampicillin resistance. The 850 bp KpnI-BamHI fragment that constitutes the part of the subtilisin 309 gene coding for the mature part of the enzyme was then used to replace the wild type gene on pSX212 giving rise to pSX222, which was then transformed into a competent B. subtilis strain. After fermentation of the transformed strain and purification of the enzyme it was shown that the product was indistinguishable from the wild type product.
  • Protease variants derived from the synthetic gene are made by using oligonucleotides with altered sequence at the place(s) where mutation is wanted (e.g. with sequences as given below) and mixing them with the rest of the oligo ⁇ nucleotides appropriate to the synthetic gene. Assembly of the variant gene is carried out with the variant materials in a manner otherwise analogous to that described above. Further information on synthetic genes generally is available in Agarval et al (1970); Nature; 227 27-34.
  • a Kpnl site was introduced into the beginning of the subtilase 309 synthetic gene encoding the mature part of the enzyme.
  • the method used is called oligonucleotide directed double-strand break repair mutagenesis and is described by Mandecki (1986) Proc. Nat. Acad. Sci . USA 83 7177-7181.
  • pSX172 is opened with Ncol at the beginning of the mature part of the subtilase 309 gene and is mixed with the oligonucleotide NOR 789 (see WO-A-92/19729) , heated to 100°C, cooled to 0°C, and transformed into E. coli .
  • the recombinants can be screened by colony hybridisation using 32-P-labelled NOR 789.
  • the recombinants that turned out to be positive during the screening had the Kpnl site introduced right in front of Ncol by changing two bases without changing the amino acid sequence.
  • pSX172 is described in EP Patent Publication No. 405 901.
  • the Kpnl site so created is inserted into pSX120 on a 400-bp Pvul-Nhel fragment, giving rise to pSX212.
  • pSX120 is also described in EP-A-405 901.
  • the synthetic gene is inserted between Kpnl and BamHI on pSX212, giving rise to pSX222.
  • oligonucleotides were combined with the rest of the oligonucleotides from the synthetic gene that was not chan- ged.
  • This procedure relates to purification of a 10 litre scale fermentation of the Subtilisin 147 enzyme, the Subtilisin 309 enzyme or mutants thereof.
  • the filtrates were concentrated to approximately 400 ml using an Amicon CH2A UF unit equipped with an Amicon S1Y10 UF cartridge.
  • the UF concentrate was centrifuged and filtered prior to absorption at room temperature on a Bacitracin affinity column at pH 7.
  • the protease was eluted from the Bacitracin column at room temperature using 25% 2- propanol and 1 M sodium chloride in a buffer solution with 0.01 dimethylglutaric acid, 0.1 M boric acid and 0.002 M calcium chloride adjusted to pH 7.
  • the fractions with protease activity from the Ba ⁇ citracin purification step were combined and applied to a 750 ml Sephadex G25 column (5 cm dia.) equilibrated with a buffer containing 0.01 dimethylglutaric acid, 0.2 M boric acid and 0.002 m calcium chloride adjusted to pH 6.5.
  • Fractions with proteolytic activity from the Sephadex G25 column were combined and applied to a 150 ml CM Sepharose CL 6B cation exchange column (5 cm dia.) equilibr ⁇ ated with a buffer containing 0.01 M dimethylglutaric acid, 0.2 M boric acid, and 0.002 M calcium chloride adjusted to pH 6.5.
  • the protease was eluted using a linear gradient of 0-0.1 M sodium chloride in 2 litres of the same buffer (0- 0.2 M sodium chloride in case of Subtilisin 147) .
  • protease containing fractions from the CM Sepharose column were combined and concentrated in an Amicon ultrafiltration cell equipped with a GR81PP membrane (from the Danish Sugar Factories Inc.) .
  • subtilisin 309 variants were produced and isolated:
  • An (isotropic) aqueous detergent liquid according to an embodiment of the invention is formulated to contain:
  • Example Dl comprising the BLS309 variant S57P+R170L+N218S.
  • the variant S57P+R170L+N218S exhibits a remarkably improved stability in this type of detergent. Moreover, the variant S57P+R170L+N218S possesses excellent compatibility towards lipase.
  • Example Dl Residual lipase activity (in percentage of original activity) after storage at 37°C for Example Dl comprising the BLS309 variant S57P+R170L+N218S and Lipolase (TM) .
  • a non-aqueous detergent liquid according to an embodiment of the invention is formulated using 38.5% C13-C15 linear primary alcohol alkoxylated with 4.9 mol/mol ethylene oxide and 2.7 mol/mol propylene oxide, 5% triacetin, 30% sodium triphosphate, 4% soda ash, 15.5% sodium perborate monohydrate containing a minor proportion of oxoborate, 4% TAED, 0.25% EDTA of which 0.1% as phosphonic acid, Aerosil 0.6%, SCMC 1%, and 0.6% protease.
  • the pH is adjusted to a value between 9" and 10, e.g. about 9.8.
  • Structured liquid detergents can for example contain, in addition to a protease as described herein, 2- 15% nonionic surfactant, 5-40% total surfactant, comprising nonionic and optionally anionic surfactant, 5-35% phosphate-containing or non-phosphate containing builder, 0.2-0.8% polymeric thickener, e.g. cross-linked acrylic polymer with m.w. over 10 6 , at least 10% sodium silicate, e.g. as neutral waterglass, alkali (e.g. potassium-containing alkali) to adjust to desired pH, preferably in the range 9-10 or upwards, e.g. above pH 11, with a ratio sodium cation: silicate anion (as free silica) (by weight) less than 0.7:1, and viscosity of 0.3-30 Pas (at 20°C and 20 s - 1 ) .
  • alkali e.g. potassium-containing alkali
  • Suitable examples contain about 5% nonionic surfactant C13-15 alcohol alkoxylated with about 5 EO groups per mole and with about 2.7 PO groups per mole, 15-23% neutral waterglass with 3.5 weight ratio between silica and sodium oxide, 13-19% KOH, 8-23% STPP, 0-11% sodium carbonate, 0.5% Carbopol 941 (TM) .
  • Protease may be incorporated at for example 0.5%.
  • Residual enzyme activity (in percentage of original activity) after storage at 37°C for Example D4 comprising the R170L variant of BLS309.
  • Residual enzyme activity (in percentage of original activity) after storage at 37°C for Example D5 comprising the BLS309 variant S57P+R170L+N218S.
  • Soap bars were produced containing 49.7 wt.% 80/20 tallow /coconut soap, 49.0% water, 20% sodium citrate, 1.0% citric acid and 0.031% protease. After preparation of the soap bars they were stored at ambient temperature and after specific time intervals samples were taken and measured for protease activity.
  • the stability data are given below in Table VII: storage W.T. R170L R170L+ R170L+ (days) N218S+S57P Y167I
  • subtilase variants R170L, R170L+N218S+S57P and R170L+Y167I exhibit a remarkably improved stability in this type of detergent.
  • Soap bars were produced containing 63.88% 80/20 tallow/coconut soap, 1% coconut fatty acid, 25.1% water, 10' sodium citrate and 0.021% protease.
  • the laundry soap bars were stored at 37°C and after specific time intervals samples were taken and measured for protease activity.
  • subtilase variant R170L+N218S+S57P exhibits a remarkably improved stability in this type of detergent. £/
  • Table IX Experimental conditions for evaluation of Subtilisin 309 variants.
  • the above model detergent is a simple detergent formulation.
  • STP is used as builder and the content of anionic tenside (LAS) is quite high. Further the pH is adjusted to 9.5, which is low for a powder detergent.
  • LAS anionic tenside
  • composition of the model detergent is as follows:
  • CMC Carboxymethylcellulose
  • pH is adjusted to 9.5
  • the improvement factor is calculated by use of the initial
  • ⁇ R is the wash effect of the enzyme in remmision units
  • a is the initial slope of the fitted curve (c ⁇ 0) .
  • c is the enzyme concentration in mg/1 -di ⁇ ax is the theoretical maximum wash effect of the enzyme in remmision units (c- ⁇ ) .
  • Table XI Variants and improvement factors for Subtilisin 309.

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GB9621436D0 (en) * 1996-10-15 1996-12-04 Unilever Plc Enzymatic compositions
EP0948610B1 (de) * 1996-11-04 2011-05-25 Novozymes A/S Subtilase-varianten und verbindungen
JP2001514846A (ja) * 1997-08-29 2001-09-18 ノボ ノルディスク アクティーゼルスカブ プロテアーゼ変異体及び組成物
US6780629B2 (en) 1997-11-21 2004-08-24 Novozymes A/S Subtilase enzymes
CA2310454C (en) 1997-11-21 2012-01-24 Novo Nordisk A/S Protease variants and compositions
US6773907B2 (en) 1997-11-21 2004-08-10 Peter Kamp Hansen Subtilase enzymes
CA2355655C (en) * 1998-12-18 2011-03-15 Novozymes A/S Subtilase enzymes of the i-s1 and i-s2 sub-groups having an additional amino acid residue in an active site loop region
CN1302106C (zh) * 1998-12-18 2007-02-28 诺沃奇梅兹有限公司 在活性位点环区中具有额外氨基酸残基的i－s1和i－s2亚组枯草杆菌酶
ATE342966T1 (de) * 1998-12-18 2006-11-15 Novozymes As Subtilase enzyme der i-s1 und i-s2 untergruppen, mit einem zusätzlichen aminosäurerest in einer aktiven schleifenregion
DE69937160T2 (de) * 1998-12-18 2008-06-19 Novozymes A/S Subtilase enzyme der i-s1 und i-s2 untergruppen, mit einem zusätzlichen aminosäurerest in einer aktiven schleifenregion
CN1342199B (zh) * 1998-12-18 2010-12-08 诺沃奇梅兹有限公司 在活性位点环区具有额外氨基酸残基的i-s1和i-s2亚族枯草杆菌酶
ATE402996T1 (de) * 1999-05-20 2008-08-15 Novozymes As Subtilase-enzyme der i-s1 und i-s2 untergruppen mit wenigstens einem zusätzlichen aminosäurerest zwischen positionen 125 und 126
EP1183341B2 (de) * 1999-05-20 2012-05-02 Novozymes A/S Subtilase enzyme der i-s1 und i-s2 untergruppen mit mindestens einer zusätzlichen aminosäure zwischen position 127 und 128
ATE407200T1 (de) * 1999-05-20 2008-09-15 Novozymes As Subtilase-enzyme der i-s1 und i-s2 untergruppen mit wenigstens einem zusätzlichen aminosäurenrest zwischen position 131 und 132
ATE408675T1 (de) * 1999-05-20 2008-10-15 Novozymes As Subtilase enzyme der i-s1 und i-s2 untergruppen mit mindestens einer zusätzlichen aminosäure zwischen position 130 und 131
AU4392800A (en) * 1999-05-20 2000-12-12 Novozymes A/S Subtilase enzymes of the i-s1 and i-s2 sub-groups having at least one additionalamino acid residue between positions 126 and 127
ATE408678T1 (de) * 1999-05-20 2008-10-15 Novozymes As Subtilase enzyme der i-s1 und i-s2 untergruppen mit mindestens einer zusätzlichen aminosäure zwischen position 129 und 130
CA2374350C (en) * 1999-05-20 2012-10-23 Novozymes A/S Subtilase enzymes of the i-s1 and i-s2 sub-groups having at least one additional amino acid residue between positions 97 and 98
AU4392500A (en) * 1999-05-20 2000-12-12 Novozymes A/S Subtilase enzymes of the i-s1 and i-s2 sub-groups having at least one additionalamino acid residue between positions 132 and 133
EP1183342B2 (de) * 1999-05-20 2012-06-13 Novozymes A/S Subtilase enzyme der i-s1 und i-s2 untergruppen mit mindestens einer zusätzlichen aminosäure zwischen position 128 und 129
AU782372B2 (en) * 1999-12-15 2005-07-21 Novozymes A/S Subtilase variants having an improved wash performance on egg stains
DE10153792A1 (de) 2001-10-31 2003-05-22 Henkel Kgaa Neue Alkalische Protease-Varianten und Wasch- und Reinigungsmittel enthaltend diese neuen Alkalischen Protease-Varianten
DE10162728A1 (de) 2001-12-20 2003-07-10 Henkel Kgaa Neue Alkalische Protease aus Bacillus gibsonii (DSM 14393) und Wasch-und Reinigungsmittel enthaltend diese neue Alkalische Protease
DE10162727A1 (de) 2001-12-20 2003-07-10 Henkel Kgaa Neue Alkalische Protease aus Bacillus gibsonii (DSM 14391) und Wasch-und Reinigungsmittel enthaltend diese neue Alkalische Protease
DE10163884A1 (de) 2001-12-22 2003-07-10 Henkel Kgaa Neue Alkalische Protease aus Bacillus sp. (DSM 14392) und Wasch- und Reinigungsmittel enthaltend diese neue Alkalische Protease
US7888093B2 (en) 2002-11-06 2011-02-15 Novozymes A/S Subtilase variants
CN101522878B (zh) * 2006-10-06 2012-11-14 诺维信公司 洗涤剂组合物及其中酶组合的使用
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