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ENZYME

ENZYME entry: EC 2.4.3.4

Accepted Name
beta-galactoside alpha-2,3-sialyltransferase
Reaction catalysed
a beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminyl derivative + CMP-N-acetyl-beta-neuraminate <=> an N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminyl derivative + CMP + H(+)
Comment(s)
  • The acceptor is Galbeta-(1->3)-GalNAc-R, where R is H, a threonine or serine residue in a glycoprotein, or a glycolipid.
  • Lactose can also act as acceptor.
  • May be identical with EC 2.4.3.2.
  • Formerly EC 2.4.99.4.
Cross-references
BRENDA2.4.3.4
EC2PDB2.4.3.4
ExplorEnz2.4.3.4
PRIAM enzyme-specific profiles2.4.3.4
KEGG Ligand Database for Enzyme Nomenclature2.4.3.4
IUBMB Enzyme Nomenclature2.4.3.4
IntEnz2.4.3.4
MEDLINEFind literature relating to 2.4.3.4
MetaCyc2.4.3.4
Rhea expert-curated reactions2.4.3.4
UniProtKB/Swiss-Prot
Q11200, SIA4A_CHICKQ11201, SIA4A_HUMANP54751, SIA4A_MOUSE
Q6KB59, SIA4A_PANTRQ02745, SIA4A_PIGQ16842, SIA4B_HUMAN
Q11204, SIA4B_MOUSEQ6KB58, SIA4B_PANTRQ11205, SIA4B_RAT
Q11206, SIA4C_HUMANQ91Y74, SIA4C_MOUSEP61130, SIA4C_PANTR
P61131, SIA4C_RAT

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.3.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-