Humeres; Debacher; De Souza, Polish Journal of Chemistry, 2007, vol. 81, # 5-6, p. 1071 - 1079
作者:Humeres、Debacher、De Souza
DOI:——
日期:——
AL-AWADI, NOURIA;TAYLOR, ROGER, J. CHEM. SOC. PERKIN TRANS., 2,(1988) N 2, 177-182
作者:AL-AWADI, NOURIA、TAYLOR, ROGER
DOI:——
日期:——
PROCESS FOR PRODUCTION OF PEPTIDE THIOESTER
申请人:GLYTECH, INC.
公开号:US20140249294A1
公开(公告)日:2014-09-04
A process for chemically converting a peptide chain into a peptide thioester includes, when a —C(═X)—R
1
group is introduced to the thiol group of the cysteine residue and then the resulting peptide is reacted with a compound having a leaving group represented by the formula: —NH—C(═Y)NHR
3
in an organic solvent, the —NH—C(═Y)NHR
3
group binds via addition reaction to the carboxyl group of the N-terminal-side peptide bond of the cysteine residue, whereby the peptide bond is cleaved and the C-terminal-side peptide fragment is cut off. Further, when the resulting peptide chain having the —NH—C(═Y)NHR
3
group is reacted with a thiol in a buffer solution, a thiol exchange reaction occurs, namely, the thiol group of the thiol binds to the carbonyl carbon to which the —NH—C(═Y)NHR
3
group has bound, whereby the —NH—C(═Y)NHR
3
group is eliminated.
METHOD FOR PRODUCING POLYPEPTIDE FRAGMENT WITH HIGH EFFICIENCY, WHICH IS SUITABLE FOR NCL METHOD
申请人:Glytech, Inc.
公开号:US20140377807A1
公开(公告)日:2014-12-25
A method for efficiently manufacturing a polypeptide fragment suitable for the NCL method includes a step of reacting a polypeptide containing a first polypeptide fragment having cysteine at the N-terminal and a second polypeptide fragment linked via an intervening sequence -Cys-W-(His)n-Z-Met- with CNBr to obtain a first polypeptide fragment having cysteine at the N-terminal and a third polypeptide fragment, and a step of sequentially reacting the third polypeptide fragment with a compound represented by the following formula (I) and a compound represented by the following formula (II) to obtain a second polypeptide fragment having the C-terminal modified.