B N Panayotov

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1. The activity of mannosyl- and N-acetylglucosamine-1-phosphate transferases in microsomes from pig embryonic liver was linear to 1 min of incubation at 37 degrees C. 2. The activity of both enzymes was higher in the presence of Mg2+ as compared to Mn2+. A maximal stimulatory effect of Mn2+ was obtained at 2 mM concentration and greater concentrations of(More)
Dolichyl pyrophosphate N-acetyl[14C]glucosamine was synthesized after incubation of liver microsomes from hibernating ground squirrels with UDP-N-acetyl[14C )glucosamine. The radioactivity of glycolipid formed by liver microsomes from hibernating ground squirrels was about 2-fold greater than by liver microsomes from active animals. Addition of exogenous(More)
Incubation of liver microsomes from hibernating ground squirrel with GDP-[14C]mannose and exogenous dolichyl phosphate resulted in the synthesis of dolichyl phosphate [14C]mannose. The mannosyltransferase activity was about 3-fold higher in microsomes from hibernating ground squirrels than in those from active animals. Incubation for 30 min of liver(More)
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