1G64

THE THREE-DIMENSIONAL STRUCTURE OF ATP:CORRINOID ADENOSYLTRANSFERASE FROM SALMONELLA TYPHIMURIUM. COBALAMIN/ATP TERNARY COMPLEX

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	d1g64a_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	RecA protein-like (ATPase-domain)	ATP:corrinoid adenosyltransferase CobA	(Salmonella enterica subsp. enterica serovar Typhimurium ) [TaxId: 90371 ],	SCOPe (2.08)
B	d1g64b_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	RecA protein-like (ATPase-domain)	ATP:corrinoid adenosyltransferase CobA	(Salmonella enterica subsp. enterica serovar Typhimurium ) [TaxId: 90371 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	RecA-like P-loop NTPases	8018081	3002019	SCOP2B (2022-06-29)
B	SCOP2 Family	CobA-like	8018080	4004001	SCOP2 (2022-06-29)
B	SCOP2 Family	CobA N-terminal region	8018084	4004002	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	RecA-like P-loop NTPases	8018081	3002019	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	CobA N-terminal region-like	8019813	3002033	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	PF02572	e1g64A1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF02572	ECOD (1.6)
B	PF02572	e1g64B2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF02572	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02572	ATP:corrinoid adenosyltransferase BtuR/CobO/CobP (CobA_CobO_BtuR)	ATP:corrinoid adenosyltransferase BtuR/CobO/CobP	This family consists of the BtuR, CobO, CobP proteins all of which are Cob(I)alamin adenosyltransferase, EC:2.5.1.17, involved in cobalamin (vitamin B12) biosynthesis. These enzymes catalyse the adenosylation reaction: ATP + cob(I)alamin + H2O <=> p ...	This family consists of the BtuR, CobO, CobP proteins all of which are Cob(I)alamin adenosyltransferase, EC:2.5.1.17, involved in cobalamin (vitamin B12) biosynthesis. These enzymes catalyse the adenosylation reaction: ATP + cob(I)alamin + H2O <=> phosphate + diphosphate + adenosylcobalamin.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	COB(I)ALAMIN ADENOSYLTRANSFERASE	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding corrinoid adenosyltransferase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity	porphyrin-containing compound biosynthetic process organonitrogen compound metabolic process tetrapyrrole metabolic process organonitrogen compound biosynthetic process organic cyclic compound metabolic process organic substance metabolic process tetrapyrrole biosynthetic process biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process metabolic process porphyrin-containing compound metabolic process cobalamin metabolic process cobalamin biosynthetic process porphyrin-containing compound biosynthetic process organonitrogen compound metabolic process tetrapyrrole metabolic process organonitrogen compound biosynthetic process organic cyclic compound metabolic process organic substance metabolic process tetrapyrrole biosynthetic process biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process metabolic process porphyrin-containing compound metabolic process cobalamin metabolic process cobalamin biosynthetic process water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process cellular metabolic process vitamin biosynthetic process vitamin metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003724	ATP:cob(I)alamin adenosyltransferase CobA/CobO/BtuR	Family
A, B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A, B	cob(I)yrinic acid a,c-diamide adenosyltransferase M-CSA #853	The corrinoid adenosylation pathway comprises three steps: (i) reduction of Co(III) to Co(II) by a one-electron transfer. (ii) Co(II) is reduced to Co(I) in a second single-electron transfe, and (iii) the Co(I) conducts a nucleophilic attack on the adenosyl moiety of ATP to leave the cobalt atom in a Co(III) state. The enzyme responsible for the adenosylation reaction is the product of the gene cobO in the aerobic bacterium Pseudomonas denitrificans and of the gene cobA in the anaerobic bacterium Salmonella typhimurium. This entry represents the cobA gene product, which shows a preference for ATP and Mn(II), although it is able to transfer a variety of nucleosides to the cobalt, including CTP, UTP and GTP, in decreasing order of preference and to use Mg(ii) instead of Mn(II).	Defined by 9 residues: ASN:A-37LYS:A-39LYS:A-41THR:A-42THR:A-43PHE:A-91TRP:A-93GLU:A-128ARG:B-51 [auth B-251] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.5.1.17 (PDB Primary Data) Search M-CSA Motif + EC 2.5.1.17

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.