Undecaprenyl-diphosphooligosaccharide-protein glycotransferase (, PglB) is an enzyme with systematic name . This enzyme catalyses the following chemical reaction
+ [protein]-L-asparagine + a glycoprotein with the oligosaccharide chain attached by N-beta-D-glycosyl linkage to protein L-asparagine
This is a bacterial enzyme that is isolated from Campylobacter jejuni and Campylobacter lari.
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