Khalkhali Z, Marshall R D, Reuvers F, Habets-Willems C, Boer P
Biochem J. 1976 Oct 15;160(1):37-41. doi: 10.1042/bj1600037.
Preparations of yeast cell membranes can catalyse in vitro the N-acetyl-beta-D-glucosaminylation of the asparagine sequon at residues 34--36 of bovine pancreatic ribonuclease A. The relevant glycopeptides were isolated from tryptic hydrolysates of the glycosylated ribonuclease and analysed. The donor used was UDP-N-acetyl-D-glucosamine, although the mechanism of the transfer is unknown. Mn2+ ions at concentrations of 25 mM double the activity of the enzymic transfer.
酵母细胞膜制剂能够在体外催化牛胰核糖核酸酶A第34 - 36位残基处天冬酰胺序列的N - 乙酰 - β - D - 葡糖胺化反应。从糖基化核糖核酸酶的胰蛋白酶水解产物中分离出相关糖肽并进行分析。尽管转移机制尚不清楚,但所用的供体是UDP - N - 乙酰 - D - 葡糖胺。浓度为25 mM的Mn2 +离子可使酶促转移活性加倍。