WO1987006268A1 - Synthese enzymatique - Google Patents
Synthese enzymatique Download PDFInfo
- Publication number
- WO1987006268A1 WO1987006268A1 PCT/AU1987/000092 AU8700092W WO8706268A1 WO 1987006268 A1 WO1987006268 A1 WO 1987006268A1 AU 8700092 W AU8700092 W AU 8700092W WO 8706268 A1 WO8706268 A1 WO 8706268A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- amino acid
- ester
- derivative
- benzyl
- peptide
- Prior art date
Links
- 0 C[N+]([O-])O*C* Chemical compound C[N+]([O-])O*C* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P21/00—Preparation of peptides or proteins
- C12P21/02—Preparation of peptides or proteins having a known sequence of two or more amino acids, e.g. glutathione
Definitions
- the present invention relates to a method of linking either an aspartate or glutamate radical to the N-terminal of an amino acid or derivative thereof.
- This method is applicable for amino acids, with the exception of proline or hydroxy-proline, and is functional regardless of whether the amino acid is in isolation or present as the N-terminal residue of a peptide.
- the method is therefore useful in peptide synthesis.
- This method is particularly applicable to the production of the artificial sweetening agent known under the generic name of aspartame. Aspartame was first discovered in 1966 and is a dipeptide of the following structure:
- A. and A_ are amino acids or peptides.
- thiol proteinases were able to catalyse the reaction between Z-L-aspartic acid dibenzyl ester and L-phenylalanine methyl ester to form a derivate of aspartame, Z-L-aspartyl(/J-benzyl ester) -L-phenylalanine methyl ester (Z is an abbreviation used in the art that refers to benzyoxycarbonyl) . Further work has shown that this method is applicable to linking either aspartate or glutamate to the N-terminal of an amino acid derivative or peptide.
- the reaction takes advantage of the esterase activity of the thiol proteinase giving rise to a much faster and more efficient reaction than results from the use of prior art processes involving condensation reactions.
- the use of an aspartate or glutamate derivative with a free carboxyl group is a different and less efficient method with a reaction time of days as compared to minutes.
- the use of the esterase activity does not generate a free carboxyl group, rather, in the enzyme-C-component complex the ester of the C-component is cleaved by a nucleophilic attack by the amino group of the incoming N-component during formation of the peptide bond.
- the present invention consists in a method for the addition of an aspartate or glutamate radical to the N-terminal of an amino acid, wherein said amino acid exists either singly, as a derivative having a C-terminal 'o protective group, or as the N-terminal residue of a peptide, said method comprising the following steps: reacting, in the presence of a thiol proteinase, a compound of a general formula:
- n is either 1 or 2
- B- is any group capable of forming an ester linkage
- B- is any group capable of forming an ester 3o linkage and cleavable by the thiol proteinase
- X is an aliphatic or aromatic hydrophobic group, with an amino acid or derivative thereof or a peptide, the amino acid derivative having a C-terminal protective group, to obtain a compound of the following general formula:
- A is a residue of said amino acid or derivative thereof or said peptide, and optionally removing the X and B, groups from the molecule.
- the thiol proteinase is either papain or chymopapain, n is 1, X is benzyloxycarbonyl (known in the art as Z) , B, and B-, -2- . ⁇ are both benzyl groups, A is a methyl ester of phenylalanine and a hydrogenation process is used to remove the Z and B, benzyl group from the reaction product to produce aspartame.
- Thiol proteinases have been well characterized in the literature (e.g. Advances in Enzymology Vol. 53 pp 239-306) , and include the enzymes papain, chymopapain, ficin, bromelain, cathepsins B and C and Streptococcal proteinase. Apart from Z there are a number of other aliphatic or aromatic hydrophobic groups which could be used in this invention. These include t-BOC, B ' .poc, and Fmoc. The use and characteristics of these compounds has been described in the literature by Schechter I and Berger A (Biochem. Biphys. Res. Comm. Vol. 27 pp 157-162) and by Fruton J.S.
- Examples of groups which can be substituted for benzyl at B, and/or B, are ethyl or methyl groups. However the rate of reaction in the case of production of aspartame is greater when B, and B- are both benzyl.
- the protective groups for the carboxyl ⁇ group of this amine component include alkoxy groups, substituted or unsubstituted benzyloxy groups, or amino groups.
- Reaction 1 part “a” was added to 9 parts “b” at room temperature and the pH maintained at 8.5. Synthesis was monitored by high pressure liquid chromatography (HPLC) . The reaction proceeded with approximately 70 to 80% efficiency in terms of the amount of '-a" used with a reaction time of approximately 2-3 hours.
- HPLC high pressure liquid chromatography
- This conversion was carried out by a hydrogenation reaction involving a palladium catalyst and hydrogen gas.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Zoology (AREA)
- General Chemical & Material Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
Abstract
Le procédé décrit permet de lier des radicaux d'aspartate ou de glutamate au terminal N d'un acide aminé ou à son dérivé ou au résidu du terminal N d'un peptide. Ledit procédé s'applique à tous les acides aminés, à l'exception de la proline et de l'hydroxy-proline et consiste à faire réagir un radical d'aspartate ou de glutamate représenté par la formule (I), où n représente 1 ou 2, B1 représente tout groupe pouvant former une liaison d'ester, B2 représente tout groupe pouvant former une liaison d'ester et étant clivable par une protéinase de thiols et X représente un groupe hydrophobe aliphatique ou aromatique, avec un peptide ou un dérivé d'acide aminé en présence d'une protéinase de thiols.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPH5408 | 1986-04-10 | ||
AUPH540886 | 1986-04-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987006268A1 true WO1987006268A1 (fr) | 1987-10-22 |
Family
ID=3771549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1987/000092 WO1987006268A1 (fr) | 1986-04-10 | 1987-04-08 | Synthese enzymatique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0303602A4 (fr) |
JP (1) | JPH01501995A (fr) |
AU (1) | AU591557B2 (fr) |
WO (1) | WO1987006268A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK72587D0 (da) * | 1987-02-13 | 1987-02-13 | Carlsberg Biotechnology Ltd | Fremgangsmaade til enzymatisk fremstilling af dipeptider |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2224644A1 (de) * | 1971-05-25 | 1973-02-01 | Tate & Lyle Ltd | Suesstoff |
US4086136A (en) * | 1975-10-23 | 1978-04-25 | (Zaidanhojin) Sagami Chemical Research Center | Process for producing a peptide using a serine or thiol proteinase |
US4116768A (en) * | 1975-04-29 | 1978-09-26 | (Zaidanhojin) Sagami Chemical Research Center | Process for producing a peptide |
GB2066266A (en) * | 1979-12-28 | 1981-07-08 | Nestle Sa | An enzymatically obtained oligomer of L-amino acid, a process for its preparation and its uses |
US4339534A (en) * | 1979-04-06 | 1982-07-13 | De Forenede Bryggerier A/S | Process for enzymatic production of peptides |
GB2092161A (en) * | 1981-02-02 | 1982-08-11 | Searle & Co | Preparation of Amino Protected-L-aspartyl-L-phenylalanine Alkyl Ester |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027519B2 (ja) * | 1977-11-02 | 1985-06-29 | 塩野義製薬株式会社 | ペプチド誘導体の新規合成法 |
JPS58146295A (ja) * | 1982-02-23 | 1983-08-31 | Sagami Chem Res Center | ペプチドの製造方法 |
JPS6041499A (ja) * | 1983-08-12 | 1985-03-05 | Asahi Chem Ind Co Ltd | ペプチドの酵素的合成法 |
-
1987
- 1987-04-08 AU AU72365/87A patent/AU591557B2/en not_active Ceased
- 1987-04-08 JP JP62502329A patent/JPH01501995A/ja active Pending
- 1987-04-08 EP EP19870902325 patent/EP0303602A4/fr not_active Withdrawn
- 1987-04-08 WO PCT/AU1987/000092 patent/WO1987006268A1/fr not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2224644A1 (de) * | 1971-05-25 | 1973-02-01 | Tate & Lyle Ltd | Suesstoff |
US4116768A (en) * | 1975-04-29 | 1978-09-26 | (Zaidanhojin) Sagami Chemical Research Center | Process for producing a peptide |
US4086136A (en) * | 1975-10-23 | 1978-04-25 | (Zaidanhojin) Sagami Chemical Research Center | Process for producing a peptide using a serine or thiol proteinase |
US4339534A (en) * | 1979-04-06 | 1982-07-13 | De Forenede Bryggerier A/S | Process for enzymatic production of peptides |
GB2066266A (en) * | 1979-12-28 | 1981-07-08 | Nestle Sa | An enzymatically obtained oligomer of L-amino acid, a process for its preparation and its uses |
GB2092161A (en) * | 1981-02-02 | 1982-08-11 | Searle & Co | Preparation of Amino Protected-L-aspartyl-L-phenylalanine Alkyl Ester |
Non-Patent Citations (1)
Title |
---|
See also references of EP0303602A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH01501995A (ja) | 1989-07-13 |
EP0303602A4 (fr) | 1990-06-26 |
AU7236587A (en) | 1987-11-09 |
AU591557B2 (en) | 1989-12-07 |
EP0303602A1 (fr) | 1989-02-22 |
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