1VZX

Roles of active site tryptophans in substrate binding and catalysis by ALPHA-1,3 GALACTOSYLTRANSFERASE

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1vzxa_	Alpha and beta proteins (a/b)	Nucleotide-diphospho-sugar transferases	Nucleotide-diphospho-sugar transferases	alpha-1,3-galactosyltransferase-like	alpha-1,3-galactosyltransferase catalytic domain	BOVINE (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B	d1vzxb_	Alpha and beta proteins (a/b)	Nucleotide-diphospho-sugar transferases	Nucleotide-diphospho-sugar transferases	alpha-1,3-galactosyltransferase-like	alpha-1,3-galactosyltransferase catalytic domain	BOVINE (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nucleotide-diphospho-sugar transferases	8037325	3000077	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleotide-diphospho-sugar transferases	8037325	3000077	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF03414	e1vzxA1	A: a/b three-layered sandwiches	X: Nucleotide-diphospho-sugar transferases (From Topology)	H: Nucleotide-diphospho-sugar transferases (From Topology)	T: Nucleotide-diphospho-sugar transferases	F: PF03414	ECOD (1.6)
B	PF03414	e1vzxB1	A: a/b three-layered sandwiches	X: Nucleotide-diphospho-sugar transferases (From Topology)	H: Nucleotide-diphospho-sugar transferases (From Topology)	T: Nucleotide-diphospho-sugar transferases	F: PF03414	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.550.10	Alpha Beta	Alpha-Beta Complex	Spore Coat Polysaccharide Biosynthesis Protein SpsA	Chain A	CATH (4.3.0)
B	3.90.550.10	Alpha Beta	Alpha-Beta Complex	Spore Coat Polysaccharide Biosynthesis Protein SpsA	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03414	Glycosyltransferase family 6 (Glyco_transf_6)	Glycosyltransferase family 6	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	N-ACETYLLACTOSAMINIDE ALPHA-1,3-GALACTOSYLTRANSFERASE	glycosyltransferase activity transferase activity catalytic activity UDP-glycosyltransferase activity N-acetyllactosaminide 3-alpha-galactosyltransferase activity galactosyltransferase activity hexosyltransferase activity UDP-galactosyltransferase activity cation binding ion binding binding metal ion binding small molecule binding	carbohydrate derivative biosynthetic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process glycoprotein biosynthetic process carbohydrate derivative metabolic process primary metabolic process glycoprotein metabolic process protein glycosylation macromolecule biosynthetic process organic substance metabolic process biosynthetic process glycosylation macromolecule modification carbohydrate derivative biosynthetic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process glycoprotein biosynthetic process carbohydrate derivative metabolic process primary metabolic process glycoprotein metabolic process protein glycosylation macromolecule biosynthetic process organic substance metabolic process biosynthetic process glycosylation macromolecule modification macromolecule glycosylation organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process protein modification process carbohydrate metabolic process cellular lipid metabolic process lipid glycosylation lipid modification lipid metabolic process	membrane-bounded organelle intracellular anatomical structure Golgi cisterna membrane Golgi apparatus subcompartment Golgi apparatus organelle subcompartment membrane Golgi cisterna cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle organelle Golgi stack membrane-bounded organelle intracellular anatomical structure Golgi cisterna membrane Golgi apparatus subcompartment Golgi apparatus organelle subcompartment membrane Golgi cisterna cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle organelle Golgi stack cytoplasm organelle membrane vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR005076	Glycosyl transferase, family 6	Family
A, B	IPR029044	Nucleotide-diphospho-sugar transferases	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A	alpha-1,3-galactosetransferase M-CSA #356	alpha-1,3-galactosetransferase catalyses the transfer of galactose from UDP-alpha-D-galactose into an alpha-1,3 linkage with beta-galactosyl groups in glycoconjugates. It belongs to the family of metal-dependent retaining glycosyltransferase. It is involved in the post translational modification glycosylation of proteins, occurring within the Golgi appararatus. The enzyme is found in many mammals, including most primates and New World monkeys but is not active in Old World primates. In this group, which also includes humans, the enzyme is inactivated by a frame shift mutation. Therefore, the product, alpha-galactose epitope, is the target of a large fraction of natural antibodies. Many mammals used for xenotranlation of organs express the alpha-galactose epitope product, and without inhibition of alpha-1, 3-galactosetransferase in the donor animal, the presence of antibodies specific to this epitope signal in the recipient human for an immune response towards the organ, resulting in rejection.	Defined by 6 residues: GLN:A-168 [auth A-247]HIS:A-201 [auth A-280]TYR:A-235 [auth A-314]GLU:A-238 [auth A-317]TRP:A-277 [auth A-356]ARG:A-286 [auth A-365] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.4.1.151 (PDB Primary Data) Search M-CSA Motif + EC 2.4.1.151

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.