Annotations: 1B1A

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1b1aa_	Alpha and beta proteins (a/b)	Flavodoxin-like	Cobalamin (vitamin B12)-binding domain	Cobalamin (vitamin B12)-binding domain	Glutamate mutase, small subunit	(Clostridium cochlearium ) [TaxId: 1494 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cobalamin (vitamin B12)-binding domain	8031722	4003680	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cobalamin (vitamin B12)-binding domain	8044100	3001260	SCOP2 (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	PF02310	e1b1aA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: PF02310	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.280	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cobalamin-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02310	B12 binding domain (B12-binding)	B12 binding domain	This domain binds to B12 (adenosylcobamide)[1-3], it is found in several enzymes, such as glutamate mutase Swiss:Q05488, methionine synthase Swiss:Q99707 and methylmalonyl-CoA mutase Swiss:P22033. It contains a conserved DxHxxGx(41)SxVx(26)GG motif, ...	This domain binds to B12 (adenosylcobamide)[1-3], it is found in several enzymes, such as glutamate mutase Swiss:Q05488, methionine synthase Swiss:Q99707 and methylmalonyl-CoA mutase Swiss:P22033. It contains a conserved DxHxxGx(41)SxVx(26)GG motif, which is important for B12 binding [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	GLUTAMATE MUTASE	vitamin binding binding cobalamin binding organic cyclic compound binding tetrapyrrole binding heterocyclic compound binding small molecule binding isomerase activity methylaspartate mutase activity catalytic activity intramolecular transferase activity cation binding ion binding metal ion binding	catabolic process oxoacid metabolic process glutamine family amino acid catabolic process amino acid metabolic process organic acid metabolic process dicarboxylic acid catabolic process organic acid catabolic process alpha-amino acid metabolic process glutamine family amino acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process glutamate metabolic process small molecule metabolic process catabolic process oxoacid metabolic process glutamine family amino acid catabolic process amino acid metabolic process organic acid metabolic process dicarboxylic acid catabolic process organic acid catabolic process alpha-amino acid metabolic process glutamine family amino acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process glutamate metabolic process small molecule metabolic process amino acid catabolic process organonitrogen compound catabolic process glutamate catabolic process organonitrogen compound metabolic process cellular metabolic process dicarboxylic acid metabolic process carboxylic acid metabolic process L-amino acid catabolic process primary metabolic process glutamate catabolic process via L-citramalate L-amino acid metabolic process proteinogenic amino acid metabolic process alpha-amino acid catabolic process proteinogenic amino acid catabolic process metabolic process cellular process small molecule catabolic process organic substance catabolic process energy derivation by oxidation of organic compounds anaerobic glutamate catabolic process fermentation nitrogenous compound fermentation generation of precursor metabolites and energy anaerobic amino acid catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036724	Cobalamin-binding domain superfamily	Homologous Superfamily
A	IPR006158	Cobalamin (vitamin B12)-binding domain	Domain
A	IPR006394	Glutamate mutase sigma subunit	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.