Article
Human Gb3/CD77 synthase produces P1 glycotope-capped N-glycans, which mediate Shiga toxin 1 but not Shiga toxin 2 cell entry.
The Journal of biological chemistry - 1 Jan 2000
Szymczak-Kulus Katarzyna, Weidler Sascha, Bereznicka Anna, Mikolajczyk Krzysztof, Kaczmarek Radoslaw, Bednarz Bartosz, Zhang Tao, Urbaniak Anna, Olczak Mariusz, Park Enoch Y, Majorczyk Edyta, Kapczynska Katarzyna, Lukasiewicz Jolanta, Wuhrer Manfred, Unverzagt Carlo, Czerwinski Marcin
Abstract excerpt
The human Gb3/CD77 synthase, encoded by the A4GALT gene, is an unusually promiscuous glycosyltransferase. It synthesizes the Galα1→4Gal linkage on two different glycosphingolipids (GSLs), producing globotriaosylceramide (Gb3, CD77, Pk) and the P1 antigen. Gb3 is the major receptor for Shiga toxins (Stxs) produced by enterohemorrhagic Escherichia coli. A single amino acid substitution (p.Q211E) ramps up the...
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