Transferases;
Glycosyltransferases;
Pentosyltransferases
BRITE hierarchy

UDP-alpha-D-xylose:3-O-[Rib-ol-P-Rib-ol-P-3-beta-D-GalNAc-(1->3)-beta-D-GlcNAc-(1->4)-O-6-P-alpha-D-Man]-Ser/Thr-[protein] xylosyltransferase

UDP-alpha-D-xylose + 3-O-[Rib-ol-P-Rib-ol-P-3-beta-D-GalNAc-(1->3)-beta-D-GlcNAc-(1->4)-O-6-P-alpha-D-Man]-Ser/Thr-[protein] = UDP + 3-O-[beta-D-Xyl-(1->4)-Rib-ol-P-Rib-ol-P-3-beta-D-GalNAc-(1->3)-beta-D-GlcNAc-(1->4)-O-6-P-alpha-D-Man]-Ser/Thr-[protein] [RN:R12244]

R12244(G)
Reaction

UDP-alpha-D-xylose [CPD:C00190];
3-O-[Rib-ol-P-Rib-ol-P-3-beta-D-GalNAc-(1->3)-beta-D-GlcNAc-(1->4)-O-6-P-alpha-D-Man]-Ser/Thr-[protein] [GL:G13094]

This eukaryotic enzyme catalyses a step in the biosynthesis of the glycan moiety of the membrane protein alpha-dystroglycan. It is specific for the second ribitol 5-phosphate in the nascent glycan chain as acceptor.

EC 2.4.2.61 created 2018

1  [PMID:23217329]

Vuillaumier-Barrot S, Bouchet-Seraphin C, Chelbi M, Devisme L, Quentin S, Gazal S, Laquerriere A, Fallet-Bianco C, Loget P, Odent S, Carles D, Bazin A, Aziza J, Clemenson A, Guimiot F, Bonniere M, Monnot S, Bole-Feysot C, Bernard JP, Loeuillet L, Gonzales M, Socha K, Grandchamp B, Attie-Bitach T, Encha-Razavi F, Seta N

Identification of mutations in TMEM5 and ISPD as a cause of severe cobblestone lissencephaly.

Am J Hum Genet 91:1135-43 (2012)
DOI:10.1016/j.ajhg.2012.10.009

[hsa:10329]

2  [PMID:27733679]

Manya H, Yamaguchi Y, Kanagawa M, Kobayashi K, Tajiri M, Akasaka-Manya K, Kawakami H, Mizuno M, Wada Y, Toda T, Endo T

The Muscular Dystrophy Gene TMEM5 Encodes a Ribitol beta1,4-Xylosyltransferase Required for the Functional Glycosylation of Dystroglycan.

J Biol Chem 291:24618-24627 (2016)
DOI:10.1074/jbc.M116.751917

[hsa:10329]