WO2005085437A1 - 変異バチルス属細菌 - Google Patents
変異バチルス属細菌 Download PDFInfo
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- WO2005085437A1 WO2005085437A1 PCT/JP2005/003756 JP2005003756W WO2005085437A1 WO 2005085437 A1 WO2005085437 A1 WO 2005085437A1 JP 2005003756 W JP2005003756 W JP 2005003756W WO 2005085437 A1 WO2005085437 A1 WO 2005085437A1
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/24—Hydrolases (3) acting on glycosyl compounds (3.2)
- C12N9/2402—Hydrolases (3) acting on glycosyl compounds (3.2) hydrolysing O- and S- glycosyl compounds (3.2.1)
- C12N9/2405—Glucanases
- C12N9/2408—Glucanases acting on alpha -1,4-glucosidic bonds
- C12N9/2411—Amylases
- C12N9/2414—Alpha-amylase (3.2.1.1.)
- C12N9/2417—Alpha-amylase (3.2.1.1.) from microbiological source
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/24—Hydrolases (3) acting on glycosyl compounds (3.2)
- C12N9/2402—Hydrolases (3) acting on glycosyl compounds (3.2) hydrolysing O- and S- glycosyl compounds (3.2.1)
- C12N9/2405—Glucanases
- C12N9/2434—Glucanases acting on beta-1,4-glucosidic bonds
- C12N9/2437—Cellulases (3.2.1.4; 3.2.1.74; 3.2.1.91; 3.2.1.150)
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- 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
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- C12Y—ENZYMES
- C12Y302/00—Hydrolases acting on glycosyl compounds, i.e. glycosylases (3.2)
- C12Y302/01—Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds (3.2.1)
- C12Y302/01004—Cellulase (3.2.1.4), i.e. endo-1,4-beta-glucanase
Definitions
- the present invention relates to a host microorganism, a recombinant microorganism, and a method for producing a protein or polypeptide used for producing a useful protein or polypeptide.
- the industrial production of useful substances by microorganisms includes foods such as alcoholic beverages, miso, and soy sauce, as well as amino acids, organic acids, nucleic acid-related substances, antibiotics, carbohydrates, lipids, and proteins.
- foods such as alcoholic beverages, miso, and soy sauce
- a transcription factor that regulates the expression of a gene in particular, a sigma factor of an RNA polymerase
- a sigma factor of an RNA polymerase for example, Pseudomonas fluorescens (Pseudomonas fluorescens) is known.
- Pseudomonas fluorescens Pseudomonas fluorescens
- m ⁇ D gene which encodes a major sigma factor (a no-keeping sigma factor) involved in the transcription of genes essential for growth during vegetative growth.
- Non-Patent Document 1 Examples of reports of increased production of antibiotics such as pyoluteorin and 2,4 diacetylphloroglucinol (see, for example, Non-Patent Document 1), and corynepacterium and glutamicum (Corvnebacterium glut amicus)! There are reported examples of increasing the fermentative production of L-lysine by overexpressing the ⁇ kA gene (for example, see Patent Document 1).
- Patent Document 1 International Publication No. 2003Z054179 pamphlet
- Non-Patent Document 1 J. Bacteriol., 177, 5387, (1995)
- the present invention has, on the genome or a plasmid, a DNA in which a promoter sequence that is specifically recognized and transcribed during sporulation is linked upstream of the dsA gene or a gene corresponding to the gene, A mutant Bacillus bacterium is provided.
- the present invention also provides a recombinant microorganism in which a gene encoding a heterologous protein or polypeptide has been introduced into the mutant Bacillus bacterium, and a method for producing a protein or polypeptide using the recombinant microorganism. Things.
- the present invention also relates to a DNA comprising a promoter sequence that is specifically recognized and transcribed during the sporulation stage connected upstream of the ⁇ kA gene or a gene corresponding to the ⁇ kA gene, on the genome of a Bacillus bacterium or It is intended to provide a method for constructing a mutant bacillus belonging to the genus Bacillus, characterized by being constructed so as to have it on a plasmid.
- FIG. 1 is a schematic diagram showing sequential sigma factor activation during a sporulation process.
- FIG. 2 is a conceptual diagram showing an example of construction of the sigA gene of the present invention.
- the present invention provides a mutant Bacillus bacterium capable of improving the productivity of a protein or polypeptide, a recombinant microorganism obtained by introducing a gene encoding a heterologous protein or polypeptide into the mutant Bacillus bacterium, A method for producing a protein or polypeptide using a recombinant microorganism.
- Bacillus bacteria have a plurality of sigma factors involved in recognition of a promoter sequence as subunits of RNA polymerase.
- Sigma Factor Recognition of Different Promoters Different genes are transcribed by binding to the RNA polymerase core complex, which consists of multiple subunits other than sigma factors, thereby reducing the presence of thousands of genes in the genome. Therefore, control gene expression according to the situation! / It is thought to be ⁇
- SigB and ECF sigma which control the response to environmental changes; known (Bacillus subtilis and Its Closest Relatives: From Genes to ells, Edited by AL Sonenshein, American Society for Microbiology, pp289, (2002)).
- the sigma factor that controls the sporulation process is sequentially expressed and activated as the sporulation process proceeds, as shown in FIG.
- the phosphorylation of SpoOA a regulator of initiation of spore formation
- a phosphate relay system Cell, 64, 545, (1991)
- SigF Induces transcription of the operon (spoIIGA-sigE) containing the structural gene (sigE) of the SigE precursor (J. Bacteriol., 169, 3329, (1987)).
- the activation of SigF is regulated by the anti-sigma factor SpoIIAB, the anti-anti-sigma factor SpoIIAA, and SpoIIE, a phosphatase of SpoIIAA (Genes Cells, 1, 881 (1996)).
- SigF induces transcription of the structural gene IR) of the signaling protein SpoIIR.
- SpoIIR secreted from the daughter cell activates SpoIIGA, a SigE precursor-activating protease located in the non-target diaphragm on the mother cell side, and this activates SigE. (Proc. Natl. Acad. Sci. US A., 92, 2012, (1995)).
- SigF induces the transcription of the SigG structural gene (sigG)
- SigE induces the transcription of the SigK structural gene (sigK).
- Activated dani occurs after the activation of SigE on the mother cell side, and activation of SigK occurs after this on the mother cell side (Mol. Microbiol., 31, 1285, (1999)).
- SigA mainly associates with the RNA polymerase core complex and induces transcription of a gene having a promoter recognized by SigA or operon. It has been reported that when other sigma factors are activated during the early phase, displacement of the sigma factors associated with the RNA polymerase core complex occurs, and the amount of RNA polymerase associated with SigA decreases relatively. (J. Bacteriol., 179, 4969, (1999)). For this reason, after the sporulation stage, the transcription amount of the promoter force recognized by SigA is considered to decrease relatively.
- the present inventors have determined that a promoter sequence that is specifically recognized and expressed during the sporulation stage is mainly involved in the transcription of genes essential for growth during the vegetative growth stage.
- the expression of the SigA gene can be enhanced during the spore formation phase after the vegetative growth phase, and the amount of binding between the sigma factor and the RNA polymerase core complex can be increased. It has been found that this can improve the productivity of the heterologous protein or polypeptide after the sporulation stage.
- the heterologous protein or polypeptide can be efficiently produced.
- the identity between the amino acid sequence and the base sequence is calculated by the Lipman-Pearson method (Science, 227, 1435, (1985)). Specifically, the analysis is performed by using the homology analysis (Search homology) program of the genetic information processing software Genetyx-Win (software development) and setting the unit size to compare (ktup) to 2. .
- the mutated Bacillus bacterium of the present invention comprises, on its genome or DNA, a DNA comprising a promoter sequence which is specifically recognized and transcribed during the sporulation stage, upstream of the skA gene or a gene corresponding to the gene. It was constructed to have it on a plasmid.
- the parent microorganism for constructing such a mutant Bacillus bacterium is not limited in its origin as long as it is a Bacillus bacterium characterized by performing sporulation. ⁇ Among them, preferred examples of Bacillus bacteria used in the present invention include Bacillus subtilis, Bacillus cereus, and Bacillus norodrans whose whole genome information is disclosed. Bacillus halodulans). Bacillus subtilis is particularly preferred in view of the fact that genetic engineering and genome engineering techniques have been established, and the ability to secrete and produce proteins outside the cells.
- the sA gene of Bacillus subtilis refers to a gene encoding the amino acid sequence shown in SEQ ID NO: 1, and the gene corresponding to the gene is 70% or more in the amino acid sequence shown in SEQ ID NO: 1.
- a promoter sequence that is specifically recognized and transcribed during the sporulation stage is linked to the upstream of the ⁇ kA gene or a gene corresponding to the ⁇ kA gene.
- the sequence may be a naturally occurring sequence, a modified version of the naturally occurring sequence, or a chemically synthesized sequence.
- sigma factors are said to recognize and bind to sequences of several bases existing at around 10 bases and 35 bases upstream of the transcription start site, and are called -10 regions and -35 regions, respectively.
- the arrangement of the two regions and the distance between the two regions have a common feature for each sigma factor. It is known to have, and is called a consensus sequence.
- the (1)-(6) promoter sequence contains (l ′) a sequence in which transcriptional repression by AbrB is released with an increase in SpoOA-P concentration, and a sequence containing a consensus sequence of SigA, (2, ) A sequence containing the consensus sequence of (3,) SigF, a sequence containing the consensus sequence of (4,) SigE, a sequence containing the consensus sequence of (5,) SigG, (6, ) Sequences including the consensus sequence of SigK can be exemplified.
- Table 1 shows the consensus sequences of each sigma factor reported to date for B. subtilis.
- R represents A or G
- W represents A or T
- N represents any base.
- Uppercase letters indicate higher storability and lowercase letters indicate lower storability.
- the promoter sequence which is specifically recognized and transcribed during the sporulation stage in the present invention is any one of the above (1)-(6) or (1 ')-(6') It has the following characteristics.
- examples of the naturally occurring promoter sequences include the Bacillus subtilis gene or operon promoter shown in Table 2, and (2) Among the promoter sequences having any of the characteristics of (2 ′) and (2 ′), those derived from nature include the Bacillus subtilis gene or operon promoter shown in Table 3, and (3) or (3 ′)
- examples of the naturally occurring promoter sequence include the Bacillus subtilis gene or the operon promoter shown in Table 4, and any of (4) or (4 ′)
- those derived from nature include the Bacillus subtilis gene or operon promoter shown in Table 5, and promoters having any of the characteristics of (5) or (5 ′).
- Naturally derived promoters include the Bacillus subtilis genes and operon promoters shown in Table 6, and among the promoter sequences having the characteristics of either (6) or (6 ′), those of natural origin Examples include the Bacillus subtilis gene or operon promoter shown in Table 7.
- promoter sequence include a promoter having any one of the features (1)-(6) or (1 ')-(6').
- SigE has been reported to show higher affinity for RNA polymerase than SigA (J. B acteriol., 179, 4969, (1999)), more preferably, It is preferable to use a promoter whose transcription is activated before activating SigE.
- the promoter sequence is a promoter sequence (corresponding to the above (1) or ()) in which the repression of transcription by AbrB is released with an increase in SpoOA-P concentration, and is recognized and transcribed by SigA.
- Promoter sequences (corresponding to (2) or (2 ′) above).
- promoter sequences having the characteristics of any of the above (1) and (1 ') include the Bacillus subtilis gene or operon promoter sequence shown in Table 1, and among them, A particularly preferred example is the promoter sequence of ⁇ kH of Bacillus subtilis.
- the promoter sequence of Bacillus subtilis ⁇ kH is the base sequence of base numbers 987 to 1027 in the base sequence shown in SEQ ID NO: 2, preferably the base sequence of base numbers 987 to 1047, more preferably the base sequence of base numbers 1 to 1047. It is a nucleotide sequence containing a sequence having a base length of up to 5000 base pairs, preferably up to 2000 base pairs, more preferably up to 1047 base pairs, and having the same promoter function as the promoter of the gene.
- promoter sequences having the characteristics of any of the above (2) and (2 ') include the Bacillus subtilis gene or operon promoters shown in Table 2.
- particularly preferred examples include the promoter sequence of the SOOIIAA-SOOIIAB-sigF operon (. ⁇ operon) of Bacillus cerevisiae.
- the promoter sequence of the SOOIIA operon of Bacillus subtilis is the base sequence of base numbers 1081-1110 in the base sequence shown in SEQ ID NO: 3, preferably the base sequence of base numbers 1081-1118, and more preferably the base sequence of base numbers 1111-1143. It has a base length of up to 5000 base pairs, preferably up to 2000 base pairs, more preferably up to 1143 base pairs, including the base sequence, and has the same promoter function as the promoter of the gene.
- the promoter sequences specifically recognized and expressed in the sporulation stage used in the present invention include the promoters of each gene or each operon of Bacillus subtilis shown in Table 1 to Table 6.
- a sequence corresponding to the sequence is also included.
- the base sequence of base numbers 987-1027 in the base sequence shown in SEQ ID NO: 2 preferably the base sequence of base numbers 1081-1118, more preferably the base sequence
- a base length of up to 5000 base pairs, preferably up to 2000 base pairs, more preferably up to 2000 base pairs, including a base sequence in which one or more bases have been substituted, deleted or inserted with respect to the base sequence of No. 11143 Is a DNA sequence having a base sequence of 1047 base pairs or less and having the same promoter function as the promoter of the gene.
- the base sequence of base numbers 1081-1110 in the base sequence represented by SEQ ID NO: 3 preferably the base sequence of base numbers 1081-1118, more preferably Is a base sequence having a base number of 1 1143, including a base sequence in which one or more bases are substituted, deleted or inserted, a base length of up to 5000 base pairs, preferably up to 2000 base pairs, more preferably Is a DNA fragment having a base sequence within 1118 base pairs and having the same promoter function as the promoter of the operon.
- the promoter sequence recognized by the sigma factor specifically involved in transcription during the sporulation stage used in the present invention includes a Bacillus subtilis gene described in Table 2 or Table 3 or a Bacillus subtilis gene.
- the promoter sequence of the ortholog gene of the gene constituting the operon preferably, the promoter sequence of the ortholog gene derived from Bacillus bacterium is also included.
- Orthologous genes can be found by using the CreateZ view Orthologous gene table program of the Microbial Genome Database (MBLTD, http: z / mogd. Genome, ad. JpZ) published on the Internet.
- orthologous genes of the Bacillus subtilis ⁇ kH gene include the Bacillus'no and Rhodrans' ⁇ KH (BH0115) genes and the Bacillus cereus BC0114 gene.
- the orthologs of the genes constituting the ⁇ 2 ⁇ operon of Bacillus subtilis include the ⁇ g £ (BH1538) gene, the ⁇ IIAS (BH1537) gene of Bacillus' Hallodrans, and the sr »oIIAA (BH1536), Notylus and Cereus. BC4072 gene, BC4073 gene, and BC4074 gene.
- the above promoter sequence can be used alone, or a plurality of types can be used in combination.
- DNA in which a promoter sequence specifically recognized and transcribed in the sporulation stage is bound to the upstream of the ⁇ k gene of Bacillus subtilis or a gene corresponding to the gene is, for example, originally present on the Bacillus subtilis genome. Constructed on the genome by inserting a DNA fragment containing a promoter sequence that is specifically recognized and transcribed during the sporulation stage, upstream or downstream of the SigA recognition promoter sequence located upstream of the existing ⁇ kA gene can do .
- the site for inserting the DNA fragment containing the promoter sequence that is specifically recognized and transcribed during the sporulation stage may be located upstream of the ⁇ igA gene or the gene corresponding to the gene.
- a region within 2000 base pairs adjacent to the upstream side is preferred.
- a region within 1000 base pairs is more preferred.
- a region within 500 base pairs is even more preferred.
- a region of 11198 base pairs is particularly preferred.
- the DNA fragment should be at least 15 base pairs from the ⁇ kA structural gene. It is desirable to insert it upstream.
- DNA in which a promoter sequence specifically recognized and transcribed during the sporulation stage is linked to the upstream of the ⁇ kA gene or a gene corresponding to the gene may be constructed by a method such as PCR. It is possible.
- the sequence derived from the upstream sequence of the ⁇ kA gene, which originally exists on the Bacillus subtilis genome, between the junction site and the ⁇ structural gene is preferably a 0-2000 base pair. It is more preferably 0 to 500 base pairs, more preferably 0 to 198 base pairs, particularly preferably 0 to 198 base pairs.
- the DNA fragment containing the promoter sequence that is specifically recognized and transcribed during spore formation does not contain an appropriate ribosome binding site sequence
- the DNA fragment between the junction site and the ⁇ gA structural gene is 15 base pairs or more.
- the DNA thus constructed may be newly introduced into the parent Bacillus bacterium.
- a DNA fragment obtained by linking a DNA fragment containing a promoter sequence that is specifically recognized and transcribed during the sporulation stage and a DNA fragment containing the ⁇ gene and the like is prepared by a method such as PCR.
- a method can be used in which the plasmid is cloned into a plasmid vector that can be replicated in a parent Bacillus bacterium.
- Bacillus subtilis is used as a parent Bacillus bacterium for constructing the mutant Bacillus bacterium of the present invention
- pUB110 (Plasmid, 15, 93, (1986)
- pC194 j. Bacteriol , 150, 815, (1982)
- ⁇ 14-3 Plasmid, 30, 119, (1993)
- a DNA fragment containing a promoter sequence specifically recognized and transcribed during the sporulation stage and ligated upstream of a DNA fragment containing a gene or the like is introduced into the genome by a method such as homologous recombination. can do.
- a method such as homologous recombination.
- there are already several reports! (Mol. Gen. Genet., 223, 268 (1990), etc.) By following these methods, the mutant Bacillus bacterium of the present invention can be obtained.
- a DNA fragment containing a promoter sequence that is specifically recognized and transcribed during the sporulation phase by the first PCR during the sporulation phase, and a housekeeping sigma Three fragments, a structural gene fragment of the factor and a gene fragment of the drug-resistant marker gene, are prepared. At this time, for example, at the downstream end of the DNA fragment containing the promoter sequence, the upstream side of the structural gene fragment of the housekeeping sigma factor is prepared.
- the three types of PCR fragments prepared in the first round were designated as type III, and an upstream primer of the fragment containing the promoter sequence and a downstream primer of the drug resistance marker gene fragment.
- the anneal with the ⁇ kA gene fragment occurs in the gene fragment sequence added to the downstream end of the fragment containing the promoter sequence and the upstream end of the drug resistance marker gene fragment.
- a DNA fragment in which a promoter sequence recognized by a sigma factor specifically involved in transcription during the sporulation stage is linked upstream of the sigA gene and a drug resistance marker gene is linked downstream thereof Can be obtained (Figure 2).
- the ⁇ i gene of Bacillus subtilis or the promoter of the ⁇ ⁇ operon is used as a promoter sequence specifically recognized and transcribed during the sporulation stage, and a clonal lamfuecol resistance gene is used as a drug resistance marker gene.
- a general PCR enzyme kit such as Pyrobest DNA polymerase (Takara Shuzo)
- PCR Protocols Current Methods and Applications, Edited by BA White
- the desired DNA fragment can be obtained by performing SOE-PCR under the usual conditions shown in Humana Press, pp251 (1993), Gene, 77, 61, (1989).
- the DNA fragment obtained by force is introduced into, for example, the Bacillus subtilis genome
- the DNA fragment is cloned into a plasmid vector that cannot be replicated in the Bacillus subtilis cells, for example, pMW219 (-Tubongene), and is subjected to combination.
- pMW219 -Tubongene
- homologous recombination occurs between the gene region of the housekeeping sigma factor on the plasmid and the ⁇ kA gene region on the genome.
- the DNA fragment containing the ⁇ gA gene to which the specifically recognized and transcribed promoter sequence is bound can be isolated from the cells introduced into the genome together with the plasmid vector (Fig. 2).
- a gene encoding a protein or polypeptide of interest is linked to the downstream of a promoter recognized by SigA, and the resulting gene is introduced into the mutated Bacillus bacterium obtained according to the present invention. Since the production of the target protein or polypeptide continues not only during the sporulation stage but also during the sporulation period, the target protein or polypeptide is produced in a much larger amount than the parent Bacillus bacterium.
- the target protein or polypeptide gene is not particularly limited, and includes various industrial enzymes such as detergents, foods, fibers, feeds, chemicals, medical care, diagnostics, and physiologically active peptides.
- industrial enzymes are classified according to their functions: Oxidoreductase, transferase (Transferase), hydrolase (Hydrolase), lyase (Lyase), isomerase (Isom erase), and synthetic enzyme.
- Oxidoreductase Oxidoreductase, transferase (Transferase), hydrolase (Hydrolase), lyase (Lyase), isomerase (Isom erase), and synthetic enzyme.
- Hydrolases such as cellulase, ⁇ -amylase and protease.
- cellulases belonging to family 5 in the classification of polysaccharide hydrolases include cellulases belonging to family 5 in the classification of polysaccharide hydrolases (Biochem. J., 280, 309 (1991)).
- cellulases derived from microorganisms, especially from bacteria belonging to the genus Bacillus are exemplified.
- Bacillus sp. Bacillus sp. (Bacillus sp.) KSM-S237 (FERM BP-7875) or Bacillus sp.
- ⁇ -amylase examples include a microorganism-derived ⁇ -amylase, and in particular, a liquid amylase derived from a Bacillus bacterium is preferable.
- a liquid amylase derived from a Bacillus bacterium is preferable.
- an alkaline amylase derived from Bacillus sp. KSM K38 strain consisting of the amino acid sequence represented by SEQ ID NO: 19, Amylase having an amino acid sequence having an identity of 90%, preferably 80%, more preferably 90% or more, still more preferably 95% or more, and particularly preferably 98% or more.
- the amino acid sequence identity is calculated by the Lipman-Pearson method (Science, 227, 1435, (1985)).
- proteases include serine proteases derived from microorganisms, particularly, serine proteases and metal proteases derived from Bacillus bacteria.
- an alkaline protease derived from Bacillus claus cillus eki) KSM-K16 strain (FERM BP-3376) consisting of the amino acid sequence represented by SEQ ID NO: 21 or 70%, preferably 80% And more preferably 90% or more, even more preferably 95% or more, particularly preferably 98% or more.
- the target protein or polypeptide gene needs to be linked upstream with a promoter sequence recognized by a housekeeping sigma factor such as Bacillus subtilis SigA. It is desirable that a control region related to the above, that is, a translation initiation region including a ribosome binding site and an initiation codon, and a secretory signal peptide region are properly bound.
- a control region related to the above that is, a translation initiation region including a ribosome binding site and an initiation codon, and a secretory signal peptide region are properly bound.
- KSM-S237 strain (FERM BP-7875) and KSM-64 strain (FERM BP-2886)
- Transcription initiation control region including the promoter transcribed by the housekeeping sigma factor of the cellulase gene of interest, a translation initiation region, a signal peptide region for secretion, and more specifically, base number 1 of the base sequence represented by SEQ ID NO: 5 1 base sequence of 659, base sequence of base number 11696 of the cellulase gene comprising the base sequence represented by SEQ ID NO: 7, and 70% or more, preferably 80% or more, more preferably 90% or more of the base sequence.
- it is properly linked to the structural gene of the protein or polypeptide.
- the recombinant plasmid in which the above-mentioned DNA fragment containing the protein or polypeptide gene of interest is ligated to an appropriate plasmid vector, is transformed by a general transformation method according to the present invention.
- the productivity of the target protein or polypeptide can be improved by incorporation into different Bacillus bacteria.
- the target protein or polypeptide can also be prepared by directly incorporating the DNA fragment into the mutant Bacillus genomic bacterium genome of the present invention using a DNA fragment obtained by binding an appropriate homologous region to the mutant Bacillus genomic bacterium genome of the present invention. Productivity can be improved.
- Production of a target protein or polypeptide using the mutant Bacillus bacterium of the present invention as a host is performed by inoculating the strain into a medium containing an assimilable carbon source, nitrogen source, and other essential components. Culture may be performed by a culture method, and after the culture, the protein or polypeptide may be collected and purified.
- a Bacillus bacterium with improved transcription efficiency of the ⁇ kA gene in the sporulation stage can be constructed.
- Useful proteins or polysaccharides can be constructed by using the mutant Bacillus bacterium as a host cell for recombinant production. Peptides can be produced efficiently.
- a DNA fragment in which the ⁇ kH gene promoter or ⁇ ⁇ operon motor is linked upstream of the structural gene is introduced into the B. subtilis genome using homologous recombination once.
- the construction of a plasmid for performing this was carried out. That is, a genomic DNA extracted from 168 strains of Bacillus subtilis was type III, and a 1.2 kb fragment (A) containing the ⁇ gA gene was prepared by PCR using a set of primers of sigAf and sigAr shown in Table 8.
- the DNA fragment (F) cannot be replicated in B. subtilis cells! / Inserts the plasmid vector for E. coli into the ⁇ mi restriction enzyme cleavage point of pMW219 and has a promoter that is specifically transcribed during the sporulation stage ⁇ ⁇ Plasmid p M for introducing the gene into the Bacillus subtilis genome
- WPHsigA and pMWPFsigA were constructed.
- sigAm and sigFUr-sigAm shown in Table 8 were used in place of sigAf and sigFUr-sigAm, respectively, and the same operation was performed to obtain the start codon of the ⁇ gA gene in pMWPFsigA ( ATG) was constructed in which pMWPFsigAm was replaced with ⁇ (ATA), which was not recognized as the start codon.
- Bacillus subtilis mutants (168PHsigA, 168PFsigA, and 168PFsigAm) obtained in Example 2 and 168 B. subtilis as a control were added to Bacillus sp. KSM-S237 (FERM).
- BP-7875 derived recombinant plasmid in which a DNA fragment (3. 1 kb) encoding alkaline cellulase (Japanese Patent Application Laid-Open No. 2000-210081) is inserted into the ⁇ mHI restriction enzyme cleavage site of shuttle vector pHY30 OPLK (Yakult). pHY-S237 was introduced by the protoplast transformation method.
- the strain thus obtained was cultured with shaking at 37 ° C overnight in 10 mL of LB medium, and 0.05 mL of this culture was further added to 50 mL of 2XL-maltose medium (2% tryptone, 1% yeast extract, l% NaCl, 7.5% maltose, 7.5 ppm manganese sulfate 4-pentahydrate, 15 ppm tetracycline) and cultured with shaking at 30 ° C for 3 days. After the cultivation, the alkaline cellulase activity of the culture supernatant from which the cells were removed by centrifugation was measured, and the amount of alkaline cellulase secreted and produced outside the cells by the culture was determined.
- 2XL-maltose medium 2% tryptone, 1% yeast extract, l% NaCl, 7.5% maltose, 7.5 ppm manganese sulfate 4-pentahydrate, 15 ppm tetracycline
- the productivity of alkaline protease derived from Bacillus bacteria was determined as follows. An evaluation was performed. Using the genomic DNA extracted from Bacillus eki KSM-K16 strain (FERM BP-3376) as type III, PCR was performed using primer sets S237pKAPpp-F and KAPter-R (Bglll) shown in Table 10. A 1.3 kb DNA fragment (G) encoding an alkaline protease (Appl. Microbiol.
- the two fragments of (H) were mixed to form ⁇ and subjected to SOE-PCR using the primer set of S237ppp-F2 (BamHI) and APter-R (Bglll) shown in Table 10 to obtain A 1.8 kb DNA fragment (I) in which an alkaline protease gene was linked downstream of the promoter region of the recellulase gene was obtained.
- the obtained 1.8 kb DNA fragment (I) was inserted into the ⁇ mHI-IsII restriction enzyme cleavage site of the shuttle vector PHY300PLK (Yakult) to construct a plasmid pHYKAP (S237p) for evaluation of alkaline protease productivity.
- the constructed plasmid pHYKAP (S237p) was introduced into the 168PHsigA strain, the 168PFsigA strain, and, as a control, the 168 Bacillus subtilis strain by a protoplast transformation method.
- the strain thus obtained was cultured under shaking under the same conditions as in Example 3 for 3 days. After the culture, the cells were removed by centrifugation, and the alkaline protease activity of the culture supernatant was measured to determine the amount of alkaline protease secreted and produced outside the cells by the culture.
- Table 11 when the 168PHsigA strain or the 168PFsigA strain was used as the host, higher secretion production of alkaline protease was observed as compared with the control 168 strain (wild type).
- Bacillus bacteria as follows: Amylase derived was evaluated for productivity.
- Strain KSM-S237 (FERM BP-7875) was designated as type I, and S237ppp-F2 (BamHl) and S237ppp-R2 (ALAA) shown in Table 10 were used. PCR was performed using the primer set to amplify a 0.6 kb DNA fragment (K) containing a promoter region of an alkaline cellulase gene (Japanese Patent Laid-Open No. 2000-210081) and a region encoding a secretory signal sequence.
- K 0.6 kb DNA fragment
- the obtained 2.2 kb DNA fragment (L) was inserted into the ⁇ mHI-I restriction enzyme cleavage site of shuttle vector I-PHY300PLK (Yakult) to construct a plasmid PHYK38 (S237ps) for evaluating alkaline amylase productivity.
- the constructed plasmid pHYK38 (S237ps) was introduced into 168PHsigA strain, 168PFsigA strain, and 168 Bacillus subtilis strain as a control by a protoplast transformation method.
- the strain thus obtained was shake-cultured under the same conditions as in Example 3 for 5 days. After culturing, remove the cells by centrifugation! The alkaline amylase activity of the supernatant of the culture solution was measured, and the amount of amylase secreted and produced outside the cells by culturing was determined.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US10/590,275 US7855065B2 (en) | 2004-03-05 | 2005-03-04 | Mutant bacterium belonging to the genus Bacillus |
EP05720028A EP1721973B1 (en) | 2004-03-05 | 2005-03-04 | Mutant bacterium belonging to the genus bacillus |
DK05720028.9T DK1721973T3 (da) | 2004-03-05 | 2005-03-04 | Mutant bakterie hørende til slægten Bacillus |
DE602005021757T DE602005021757D1 (de) | 2004-03-05 | 2005-03-04 | Zur gattung bacillus gehörendes mutantes bakterium |
CN200580007128XA CN1930289B (zh) | 2004-03-05 | 2005-03-04 | 变异芽孢杆菌属细菌 |
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WO2005085437A1 true WO2005085437A1 (ja) | 2005-09-15 |
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PCT/JP2005/003756 WO2005085437A1 (ja) | 2004-03-05 | 2005-03-04 | 変異バチルス属細菌 |
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US (1) | US7855065B2 (ja) |
EP (1) | EP1721973B1 (ja) |
CN (1) | CN1930289B (ja) |
DE (1) | DE602005021757D1 (ja) |
DK (1) | DK1721973T3 (ja) |
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JP4485341B2 (ja) * | 2004-12-20 | 2010-06-23 | 花王株式会社 | 組換え微生物 |
US20130224757A1 (en) * | 2010-08-19 | 2013-08-29 | Novozymes A/S | Induced sporulation screening method |
KR101755767B1 (ko) * | 2014-09-05 | 2017-07-10 | 씨제이제일제당 (주) | L-라이신 생산능이 향상된 미생물 및 이를 이용한 l-라이신 생산방법 |
CN106811416B (zh) * | 2017-02-24 | 2020-06-12 | 中国农业科学院植物保护研究所 | 水解酶CwlC在芽胞杆菌母细胞裂解中的应用 |
CN110055204B (zh) * | 2019-05-10 | 2020-04-10 | 齐鲁工业大学 | 一种敲除spoⅡQ和pcf基因提高地衣芽孢杆菌发酵产酶的方法及应用 |
CN113801888B (zh) * | 2021-09-16 | 2023-09-01 | 南京农业大学 | 用于提高枯草芽孢杆菌自发突变频率的质粒 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06327472A (ja) * | 1993-05-19 | 1994-11-29 | Kao Corp | アルカリプロテアーゼ遺伝子 |
JP2000184882A (ja) * | 1998-12-21 | 2000-07-04 | Kao Corp | 新規アミラーゼ |
JP2000210081A (ja) * | 1999-01-21 | 2000-08-02 | Kao Corp | 耐熱性アルカリセルラ―ゼ遺伝子 |
WO2003054179A1 (en) * | 2001-12-20 | 2003-07-03 | Degussa Ag | Alleles of the siga gene from coryneform bacteria |
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US5955310A (en) * | 1998-02-26 | 1999-09-21 | Novo Nordisk Biotech, Inc. | Methods for producing a polypeptide in a bacillus cell |
CN1212395C (zh) | 1999-06-10 | 2005-07-27 | 花王株式会社 | 突变α-淀粉酶 |
JP4897186B2 (ja) * | 2002-03-27 | 2012-03-14 | 花王株式会社 | 変異アルカリセルラーゼ |
-
2005
- 2005-03-04 CN CN200580007128XA patent/CN1930289B/zh not_active Expired - Fee Related
- 2005-03-04 WO PCT/JP2005/003756 patent/WO2005085437A1/ja not_active Application Discontinuation
- 2005-03-04 EP EP05720028A patent/EP1721973B1/en not_active Expired - Fee Related
- 2005-03-04 DE DE602005021757T patent/DE602005021757D1/de active Active
- 2005-03-04 US US10/590,275 patent/US7855065B2/en not_active Expired - Fee Related
- 2005-03-04 DK DK05720028.9T patent/DK1721973T3/da active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06327472A (ja) * | 1993-05-19 | 1994-11-29 | Kao Corp | アルカリプロテアーゼ遺伝子 |
JP2000184882A (ja) * | 1998-12-21 | 2000-07-04 | Kao Corp | 新規アミラーゼ |
JP2000210081A (ja) * | 1999-01-21 | 2000-08-02 | Kao Corp | 耐熱性アルカリセルラ―ゼ遺伝子 |
WO2003054179A1 (en) * | 2001-12-20 | 2003-07-03 | Degussa Ag | Alleles of the siga gene from coryneform bacteria |
Non-Patent Citations (14)
Title |
---|
"American Society for Microbiology", 2002, article "Cells", pages: 289 |
"Current Methods and Applications", 1993, HUMANA PRESS, article "PCR Protocols", pages: 251 |
"Current Methods and Applications", 1993, HUMANA PRESS, pages: 251 |
BIRD T. ET AL: "The effect of supercoiling on the in vitro transcription of the spoIIA operon from Bacillus subtilis", BIOCHIMIE, vol. 74, 1992, pages 627 - 634, XP002989832 * |
GENE, vol. 77, 1989, pages 51 |
GENE, vol. 77, 1989, pages 61 |
HELDENWANG W.G. ET AL: "The sigma factors of Bacillus subtilis", MICROBIOL. REV., vol. 59, 1995, pages 1 - 30, XP000601241 * |
J. BACTERIOL., vol. 179, 1999, pages 4969 |
MOL. GEN. GENET., vol. 223, 1990, pages 268 |
PARK S.G. ET AL: "Sequencing and phylogenetic analysis of the spoIIA operon from diverse Bacillus and Paenibacillus species", GENE, vol. 194, 1997, pages 25 - 33, XP004084656 * |
PLASMID, vol. 30, 1993, pages 119 |
SCHNIDER U. ET AL: "Amplification of the housekeeping sigma factor in Pseudomonas fluorescens CHAO enhances antibiotic production and improves biocontrol abilities", J. BACTERIOL., vol. 177, 1995, pages 5387 - 5392, XP002989831 * |
SCIENCE, vol. 227, 1985, pages 1435 |
See also references of EP1721973A4 * |
Also Published As
Publication number | Publication date |
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DK1721973T3 (da) | 2010-09-13 |
EP1721973A4 (en) | 2007-07-18 |
EP1721973A1 (en) | 2006-11-15 |
CN1930289A (zh) | 2007-03-14 |
US20090170154A1 (en) | 2009-07-02 |
DE602005021757D1 (de) | 2010-07-22 |
US7855065B2 (en) | 2010-12-21 |
EP1721973B1 (en) | 2010-06-09 |
CN1930289B (zh) | 2012-09-05 |
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