Function | Transfers the sialyl group (N-acetyl-alpha-neuraminyl or NeuAc) from CMP-NeuAc onto glycoproteins and glycolipids, forming an alpha-2,6-linkage. Produces branched type disialyl structures by transfer of a sialyl group onto the GalNAc or GlcNAc residue inside backbone core chains having a terminal sialic acid with an alpha-2,3-linkage on Gal. ST6GalNAcVI prefers glycolipids to glycoproteins, predominantly catalyzing the biosynthesis of ganglioside GD1alpha from GM1b. Besides GMb1, MSGG and other glycolipids, it shows activity towards sialyl Lc4Cer generating disialyl Lc4Cer, which can lead to the synthesis of disialyl Lewis a (Le(a)), suggested to be a cancer-associated antigen. Also has activity toward GD1a and GT1b, and can generate DSGG (disialylgalactosylgloboside) from MSGG (monosialylgalactosylgloboside). |
Protein Name | Alpha-N-Acetylgalactosaminide Alpha-2 -6-Sialyltransferase 6Galnac Alpha-2 -6-Sialyltransferase ViSt6galnac ViSt6galnacviHst6galnac ViSialyltransferase 7fSiat7-F |
Database Links | Reactome: R-HSA-4085001Reactome: R-HSA-9037629Reactome: R-HSA-9840309 |
Cellular Localisation | Golgi Apparatus MembraneSingle-Pass Type Ii Membrane Protein |
Alternative Protein Names | Alpha-N-Acetylgalactosaminide Alpha-2 -6-Sialyltransferase 6 proteinGalnac Alpha-2 -6-Sialyltransferase Vi proteinSt6galnac Vi proteinSt6galnacvi proteinHst6galnac Vi proteinSialyltransferase 7f proteinSiat7-F proteinST6GALNAC6 proteinSIAT7F proteinUNQ708 proteinPRO1359 protein |
Information sourced from Uniprot.org