Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyAlpha-2, 3/8-sialyltransferase CstII 8028400 4001079 SCOP2 (2022-06-29)
ASCOP2 SuperfamilySialyltransferase/TPK catalytic domain-like 8040779 3000683 SCOP2 (2022-06-29)
BSCOP2B SuperfamilySialyltransferase/TPK catalytic domain-like 8040779 3000683 SCOP2B (2022-06-29)
CSCOP2B SuperfamilySialyltransferase/TPK catalytic domain-like 8040779 3000683 SCOP2B (2022-06-29)
DSCOP2B SuperfamilySialyltransferase/TPK catalytic domain-like 8040779 3000683 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ACST-Ie1ro7A1 A: a/b three-layered sandwichesX: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)H: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)T: Alpha-2,3/8-sialyltransferase CstII-relatedF: CST-IECOD (1.6)
BCST-Ie1ro7B1 A: a/b three-layered sandwichesX: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)H: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)T: Alpha-2,3/8-sialyltransferase CstII-relatedF: CST-IECOD (1.6)
CCST-Ie1ro7C1 A: a/b three-layered sandwichesX: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)H: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)T: Alpha-2,3/8-sialyltransferase CstII-relatedF: CST-IECOD (1.6)
DCST-Ie1ro7D1 A: a/b three-layered sandwichesX: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)H: Alpha-2,3/8-sialyltransferase CstII-related (From Topology)T: Alpha-2,3/8-sialyltransferase CstII-relatedF: CST-IECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
PF06002Alpha-2,3-sialyltransferase (CST-I) (CST-I)Alpha-2,3-sialyltransferase (CST-I)- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B, C, D
alpha-2,3/8-sialyltransferase - -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B, C, D
IPR036715Alpha-2,3-sialyltransferase superfamilyHomologous Superfamily
A, B, C, D
IPR009251Alpha-2,3-sialyltransferaseFamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
alpha-2,3-sialyltransferase  M-CSA #840

Sialyltransferase (CstII) from Campylobacter jejuni catalyses the transfer of the sialic acid moiety from cytidine-5'-monophospho-N-acetyl-neuramic acid (CMP-NeuAc) to the terminal positions of glycoconjugates. The products play critical roles in recognition and adherence. Campylobacter jejuni has been shown to express variable cell surface carbohydrate mimics of human gangliosides that are associated with virulence.

Defined by 4 residues: ARG:A-129TYR:A-156TYR:A-162HIS:A-188
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Explore in 3DM-CSA Motif Definition
EC: 2.4.99 (PDB Primary Data)