Kinetically Controlled Peptide Synthesis Mediated by Papain Using the Carbamoylmethyl Ester as an Acyl Donor
作者:Toshifumi Miyazawa、Takao Horimoto、Kayoko Tanaka
DOI:10.1007/s10989-014-9393-0
日期:2014.9
carbamoylmethyl (Cam) esters as acyl donors in the presence of a cysteine protease, papain, immobilized on Celite. Several segment condensations were also achieved generally in high yields without danger of racemization and formation of the secondary-hydrolysis product. Moreover, partial sequences of some bioactive peptides were prepared through segment condensations, and aimed-at peptides were obtained generally
在固定于硅藻土的半胱氨酸蛋白酶木瓜蛋白酶存在下,通常以高收率合成一系列二肽,其中氨基甲酰基甲基(Cam)酯为酰基供体。通常也以高收率获得数个段的缩合,而没有消旋化和形成二次水解产物的危险。此外,一些生物活性肽的部分序列是通过片段缩合制备的,并且通常以高收率获得了针对性的肽,而没有羧基组分的C-末端残基的外消旋化。因此,在半胱氨酸介导的偶联中再次确定了Cam酯在动力学控制的肽合成中的优越性。 如先前报道的被丝氨酸蛋白酶催化的那些。