Alpha-N-acetyl-neuraminyl-2,3-beta-galactosyl-1,3-N-acetyl-galactosaminide alpha-2,6-sialyltransferase (EC 2.4.99.7) (NeuAc-alpha-2,3-Gal-beta-1,3-GalNAc-alpha-2,6-sialyltransferase) (ST6GalNAc IV) (ST6GalNAcIV) (Sialyltransferase 3C) (SIAT3-C) (Sialyltransferase 7D) (SIAT7-D)
1_MKAPG 6_ RLVLI 11_ ILCSV 16_ VFSAV 21_ YILLC 26_ CWAGL 31_ PLCLA 36_ TCLDH 41_ HFPTG 46_ SRPTV 51_ PGPLH 56_ FSGYS 61_ SVPDG 66_ KPLVR 71_ EPCRS 76_ CAVVS 81_ SSGQM 86_ LGSGL 91_ GAEID 96_ SAECV 101_ FRMNQ 106_ APTVG 111_ FEADV 116_ GQRST 121_ LRVVS 126_ HTSVP 131_ LLLRN 136_ YSHYF 141_ QKARD 146_ TLYMV 151_ WGQGR 156_ HMDRV 161_ LGGRT 166_ YRTLL 171_ QLTRM 176_ YPGLQ 181_ VYTFT 186_ ERMMA 191_ YCDQI 196_ FQDET 201_ GKNRR 206_ QSGSF 211_ LSTGW 216_ FTMIL 221_ ALELC 226_ EEIVV 231_ YGMVS 236_ DSYCR 241_ EKSHP 246_ SVPYH 251_ YFEKG 256_ RLDEC 261_ QMYLA 266_ HEQAP 271_ RSAHR 276_ FITEK 281_ AVFSR 286_ WAKKR 291_ PIVFA 296_HPSWR
1: Transfers the sialyl group (N-acetyl-alpha-neuraminyl or NeuAc) from CMP-NeuAc to the GalNAc residue on the NeuAc-alpha-2,3-Gal-beta-1,3-GalNAc sequence of glycoproteins and glycolipids forming an alpha-2,6-linkage. Produces branched type disialyl structures by transfer of a sialyl group onto a GalNAc residue inside the backbone core chains. Prefers O-glycans to glycoproteins or glycolipids