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ST6GALNAC2, ST6GalNAc II, hST6GalNAc II, SIATL1, sialyltransferase 7
ST6GALNAC2 belongs to a family of sialyltransferases that add sialic acids to the nonreducing ends of glycoconjugates. At the cell surface, these modifications have roles in cell-cell and cell-substrate interactions, bacterial adhesion, and protein targeting (Samyn-Petit et al., 2000 [PubMed 10742600]).[supplied by OMIM, Mar 2008] (from
Ma et al., Ürümqi, China. In Exp Ther Med, Jun 2015
UNASSIGNED: The aim of the present study was to explore the correlation between single nucleotide polymorphisms (SNPs) rs3840858 and rs2304921 in a specific α-2,6 sialyltransferase gene, ST6GALNAC2, and the susceptibility to immunoglobulin (IgA) nephropathy (IgAN).
Raska et al., Birmingham, United States. In Nephrol Dial Transplant, Feb 2015
Prior analyses of IgA1-producing cells had indicated that α2,6-sialyltransferase II (ST6GalNAc-II) is likely responsible for sialylation of GalNAc of galactose-deficient IgA1, but direct evidence is missing.
Novak et al., Birmingham, United States. In J Biol Chem, 2014
These cytokines reduced galactosylation of the O-glycan substrate directly via decreased expression of the galactosyltransferase C1GalT1 and, indirectly, via increased expression of the sialyltransferase ST6GalNAc-II, which prevents galactosylation by C1GalT1.
However, ST8Sia-VI-based chimeric enzymes lost expression or activity when their sialylmotif L sequences were replaced with those of ST3Gal-I and ST6GalNAc-II, suggesting the existence of an ST8Sia family specific motif in the sialylmotif L. The ST8Sia-I- and ST8Sia-VI-based chimeric enzymes lost enzymatic activity when their sialylmotif S sequences were interchanged.
potential genetic interactions of C1GALT1 and ST6GALNAC2 variants influence IgA1 O-glycosylation, disease predisposition, and disease severity, and may contribute to the polygenic nature of IgA nephropathy
Burchell et al., London, United Kingdom. In J Immunol, 2007
A down-regulation of C2GnT1 mRNA and enzymatic activity was observed with a concurrent up-regulation of ST3Gal I and ST6GalNAc II mRNA resulting in a loss of the core 2 structures required for sLe(x) expression as a P-selectin ligand.
the ADG haplotype in the ST6GALNAC2 gene is a functional regulatory variant that may contribute to the genetic susceptibility in a subset of patients in whom the desialylation of IgA1 molecules was the main causative pathogenesis of IgAN