Regioselective Hydrolytic Cleavage of N-Terminal Myristoyl-peptide.
作者:Keiko OKIMURA、Kaori SUGIMOTO、Kazuhiro OHKI、Naoki SAKURA、Tadashi HASHIMOTO
DOI:10.1248/cpb.47.1249
日期:——
To develop a simple chemical deblocking method for Myr-Gly-peptide, we investigated the susceptibility and stability of the internal peptide linkages of model peptides, Myr-Gly-X-Phe-OH (X=Gly, Ala, Val, Lys, His, Arg, Ile, Glu, Gln, Asp, Asn), to HCl, H2SO4 and methanesulfonic acid (MSA) at 25 and 60°C, and analyzed the hydrolysates by HPLC. The results indicated that acid hydrolysis in concentrated acids was superior for selective cleavage of the Gly-X linkage. Here, we describe a simple method for regioselective cleavage of the Gly-X bond of Myr-Gly-X-Phe-OH by acids and determination of the decomposition products by RP-HPLC.
为了开发一种简单的化学脱保护方法用于Myr-Gly-肽,我们研究了模型肽Myr-Gly-X-Phe-OH(X=Gly、Ala、Val、Lys、His、Arg、Ile、Glu、Gln、Asp、Asn)内部肽键对HCl、H2SO4和甲磺酸(MSA)在25和60°C下的敏感性和稳定性,并通过HPLC分析了水解产物。结果表明,在浓酸中进行酸水解对选择性断裂Gly-X键更有优势。在此,我们描述了一种通过酸类物质进行区域选择性断裂Myr-Gly-X-Phe-OH中的Gly-X键的简单方法,并通过RP-HPLC确定其分解产物。