Peptide bond formation by aminolysin-A catalysis: A simple approach to enzymatic synthesis of diverse short oligopeptides and biologically active puromycins
作者:Hirokazu Usuki、Yukihiro Yamamoto、Jiro Arima、Masaki Iwabuchi、Shozo Miyoshi、Teruhiko Nitoda、Tadashi Hatanaka
DOI:10.1039/c0ob00403k
日期:——
peptide bonds to give linear homo-oligopeptides, hetero-dipeptides, and cyclic dipeptides using cost-effective substrates in a one-pot reaction. Aminolysin-A can recognize several C-terminal-modified amino acids, including the L- and D-forms, as acyl donors as well as free amines, including amino acids and puromycin aminonucleoside, as acyl acceptors. The absence of amino acid esters prevents the formation
新S9系列的氨肽酶从嗜热放线菌衍生Acidothermus了解纤维素被催化丝氨酸的定点突变克隆和工程化到transaminopeptidase 491到半胱氨酸。经过工程改造的生物催化剂,称为氨基溶素A,可以在一锅反应中使用经济高效的底物来催化肽键的形成,从而生成线性同型寡肽,杂二肽和环状二肽。氨基溶素A可以识别多个C末端修饰的氨基酸(包括L-和D-形式)作为酰基供体,以及游离胺(包括氨基酸和嘌呤霉素氨基核苷)作为酰基受体。氨基酸酯的缺乏阻止了肽的形成。因此,反应机理涉及氨解而不是水解的逆反应。氨基溶素系统将是通过简单方法制备结构多样的肽模拟物的有益工具。