Peptide splicing in a double‐sequence analogue of trypsin inhibitor SFTI‐1 substituted in the P
<sub>1</sub>
positions by peptoid monomers
作者:Natalia Karna、Dawid Dębowski、Anna Łęgowska、Remigiusz Bąchor、Zbigniew Szewczuk、Krzysztof Rolka
DOI:10.1002/bip.22659
日期:2015.5
described a process of trypsin‐assisted peptide splicing of analogs of trypsin inhibitor SFTI‐1, that seems to be very similar to proteasome‐catalyzed peptide splicing. Here, we show, for the first time, that a peptide–peptoid hybrid (peptomer) can also be spliced by trypsin. Incubation of a double sequence SFTI‐1 analog, containing two peptoid monomers, with equimolar amount of trypsin leads to formation
最近,我们描述了胰蛋白酶抑制剂SFTI-1类似物的胰蛋白酶辅助肽剪接的过程,这似乎与蛋白酶体催化的肽剪接非常相似。在这里,我们首次展示了胰蛋白酶也可以剪接肽-类肽杂化物(肽)。含有两个类肽单体和等摩尔量的胰蛋白酶的双序列SFTI-1类似物的孵育导致形成单环肽作为主要产物。我们证明了类肽单体形成的肽键不仅被胰蛋白酶消化,而且还参与了酶辅助的剪接过程。©2015 Wiley Periodicals,Inc.生物聚合物(Pept Sci)104:206–212,2015年。