<i>N</i>-Carboxyanhydride-Mediated Fatty Acylation of Amino Acids and Peptides for Functionalization of Protocell Membranes
作者:Enver Cagri Izgu、Anders Björkbom、Neha P. Kamat、Victor S. Lelyveld、Weicheng Zhang、Tony Z. Jia、Jack W. Szostak
DOI:10.1021/jacs.6b08801
日期:2016.12.28
sulfide has been shown to generate short peptides via the formation of cyclic aminoacid N-carboxyanhydrides (NCAs). Here, we show that the polymerization of valine-NCA in the presence of fatty acids yields acylated aminoacids and peptides via a mixed anhydride intermediate. Notably, Nα-oleoylarginine, a product of the reaction between arginine and oleic acid in the presence of valine-NCA, partitions
Novel fructosyl peptide oxidase and utilization thereof
申请人:Ebinuma Hiroyuki
公开号:US20070054344A1
公开(公告)日:2007-03-08
The present invention is directed to a defructosylation enzyme originating from a plant, a method of defructosylating a fructosylated peptide or protein through use of the enzyme, and a method of measuring a fructosylated peptide or protein.
Based on a principle that is different to that of a conventional enzymatic method, the present invention provides a novel method for assaying a glycated protein by a simple procedure, within a short period of time, and with high accuracy, and a reagent kit for assaying used in the method. The method for assaying a glycated protein in a sample is realized by treating a glycated protein-containing sample with protease to liberate a glycated peptide, preferably an α-glycated peptide, particularly preferably an α-glycated dipeptide, from a glycated protein, allowing an oxidase to react with the liberated glycated peptide, and determining the produced hydrogen peroxide.
The present invention has an object of providing a novel fructosyl peptide oxidase having superior physicochemical properties such as stability that is useful as an enzyme for clinical diagnosis, and an object of providing a method for producing the fructosyl peptide oxidase.
A novel fructosyl peptide oxidase having physicochemical properties useful as an enzyme for clinical diagnosis, and a method for producing a novel fructosyl peptide oxidase are provided herein, the method comprising: culturing a microorganism capable of producing the oxidase in a medium; and collecting the oxidase from the culture. Furthermore, a fructosyl peptide oxidase gene coding for a novel fructosyl peptide oxidase, recombinant DNA wherein the gene is inserted into vector DNA, and a method for producing a novel fructosyl peptide oxidase are provided herein, the method comprising: culturing, in a medium, a transformant or a transductant including the gene; and collecting the novel fructosyl peptide oxidase from the culture.
本发明的目的是提供一种新型果糖基肽氧化酶,它具有优异的理化性质,如稳定性,可作为一种酶用于临床诊断,本发明的目的还包括提供一种生产果糖基肽氧化酶的方法。
本文提供了一种新型果糖基肽氧化酶,其理化性质可用作临床诊断用酶,还提供了一种生产新型果糖基肽氧化酶的方法,该方法包括:在培养基中培养能够产生氧化酶的微生物;从培养物中收集氧化酶。此外,本文还提供了编码新型果糖基肽氧化酶的果糖基肽氧化酶基因、将该基因插入载体 DNA 的重组 DNA 以及生产新型果糖基肽氧化酶的方法,该方法包括:在培养基中培养包括该基因的转化体或转导体;以及从培养物中收集新型果糖基肽氧化酶。
PROCESS FOR PRODUCING a-GLYCOSYLATED DIPEPTIDE AND METHOD OF ASSAYING a-GLYCOSYLATED DIPEPTIDE
申请人:KIKKOMAN CORPORATION
公开号:EP1679378A1
公开(公告)日:2006-07-12
The present invention relates to a method for producing α-glycated dipeptide, which comprises causing protease to act on N-terminal-glycated peptide or N-terminal-glycated protein. The present invention further relates to a method for determining the amount of α-glycated dipeptide, which comprises causing a fructosyl peptide oxidase to act on the α-glycated dipeptide obtained by the above method and then determining the amount of the thus generated hydrogen peroxide. According to the present invention, a method for producing α-glycated dipeptide is provided, which enables the simple, rapid, and efficient production of α-glycated dipeptide from glycated protein or glycated peptide. Furthermore, according to the present invention, a method for determining the amount of α-glycated dipeptide is provided, which enables to determine the amount of α-glycated dipeptide in a highly precise manner within a short time period.