Journal article

Genetic defect in N-acetylglucosaminyltransferase I gene of a ricin-resistant baby hamster kidney mutant

AS Opat, H Puthalakath, J Burke, PA Gleeson

Biochemical Journal | PORTLAND PRESS LTD | Published : 1998


The analysis of mutations associated with glycosylation-defective cell lines has the potential for identifying critical residues associated with the activities of enzymes involved in the biosynthesis of glycoconjugates. A ricin-resistant (RicR) baby hamster kidney (BHK) cell mutant, clone RicR14, has a deficiency in N-acetylglucosaminyltransferase I (GlcNAc-TI) activity and as a consequence is unable to synthesize complex and hybrid N-glycans. Here we show that RicR14 cells transfected with wild-type GlcNAc-TI regained the ability to synthesize complex N-glycans, demonstrating that the glycosylation defect of RicR14 cells is due solely to the lack of GlcNAc-TI activity. With the use of speci..

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