MUTANT PROTEIN HAVING THE PEPTIDE-SYNTHESIZING ACTIVITY
申请人:ABE Isao
公开号:US20070292916A1
公开(公告)日:2007-12-20
The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II). (I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2. (II) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations L1 to L335 and M1 to M642 in an amino acid sequence of SEQ ID NO:208
Mutant protein having the peptide-synthesizing activity
申请人:Abe Isao
公开号:US20070190602A1
公开(公告)日:2007-08-16
The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II).
(I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2.
(II) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations L1 to L335 and M1 to M642 in an amino acid sequence of SEQ ID NO:208
本发明旨在提供一种优异的合成肽蛋白质及高效生产肽的方法。在以下(I)和(II)所示的蛋白质的存在下,通过反应胺组分和羧基组分来合成肽。(I)突变蛋白质的氨基酸序列包括来自突变1到68和突变239到290以及SEQ ID NO:2的氨基酸序列中的突变324到377中的一个或多个突变。(II)突变蛋白质的氨基酸序列包括来自突变L1到L335和M1到M642和SEQ ID NO:208的氨基酸序列中的一个或多个突变。
MUTANT PROTEIN HAVING PEPTIDE-PRODUCTION ACTIVITY
申请人:Ajinomoto Co., Inc.
公开号:EP1829968A1
公开(公告)日:2007-09-05
The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II).
(I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2.
(II) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations
L1 to L335 and M1 to M642 in an amino acid sequence of SEQ ID NO:208
The present invention provides a method for producing a peptide, comprising culturing a transformant introduced with an expression vector to prepare a culture, and mixing the culture with a carboxy component and an amine component to form the peptide. The expression vector comprises a polynucleotide encoding a protein: (A) having selected deletions in the amino acid sequence of SEQ ID NO:2, (B) having a mutation of one or several amino acid residues in any protein selected from said group (A); (C) having 70% or more amino acid sequence identity to any protein selected from said group (A), (D) encoded by a polynucleotide that hybridizes under a stringent condition with a polynucleotide consisting of a nucleotide sequence complementary to a polynucleotide encoding any protein selected from said group (A), and (E) encoded by a polynucleotide having 70% or more nucleotide sequence identity to the polynucleotide encoding any protein selected from the group (A).
Synthesis of a tetradecapeptide corresponding to sequence 90-103 of bovine adrenodoxin.
Two tetradecapeptides, Z-Leu-Gly-Cys (Bzl)-Gln-Ile-Cys (Bzl)-Leu-Thr-Lys (Z)-Ala-Met-Asp (OBzl)-Asn-Met-OH (I) and its benzyl ester (VIII) were synthesized. I was synthesized by the condensation of two heptapeptides [Z-Leu-Gly-Cys (Bzl)-Gln-Ile-Cys (Bzl)-Leu-NHNH2 (II) and Boc-Thr-Lys (Z)-Ala-Met-Asp (OBzl)-Asn-Met-OH (III)], while VIII was synthesized stepwise by the condensation of 4 fragments [Z-Leu-Gly-Cys (Bzl)-Gln-OH (XI), Boc-Ile-Cys (Bzl)-Leu-OH (X), Boc-Thr-Lys (Z)-Ala-NHNH2 (IV) and Boc-Met-Asp (OBzl)-Asn-Met-OBzl (IX)]. Deblocked I and deblocked VIII each formed a chelate with iron and sulfur.