1XVT

Crystal Structure of Native CaiB in complex with coenzyme A

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	d1xvta_	Alpha and beta proteins (a/b)	CoA-transferase family III (CaiB/BaiF)	CoA-transferase family III (CaiB/BaiF)	CoA-transferase family III (CaiB/BaiF)	Crotonobetainyl-CoA:carnitine CoA-transferase, CaiB	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	CoA-transferase family III (CaiB/BaiF)	8033758	3000607	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	PF02515	e1xvtA1	A: a/b three-layered sandwiches	X: SurE-like/CoA-transferase family III (CaiB/BaiF) (From Topology)	H: SurE-like/CoA-transferase family III (CaiB/BaiF) (From Topology)	T: SurE-like/CoA-transferase family III (CaiB/BaiF)	F: PF02515	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10540	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Crotonobetainyl-coa:carnitine coa-transferase	CATH (4.3.0)
A	3.30.1540.10	Alpha Beta	2-Layer Sandwich	formyl-coa transferase, domain 3	formyl-coa transferase, domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02515	CoA-transferase family III (CoA_transf_3)	CoA-transferase family III	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Crotonobetainyl-CoA:carnitine CoA-transferase	L-carnitine CoA-transferase activity transferase activity, transferring sulphur-containing groups transferase activity catalytic activity CoA-transferase activity	organonitrogen compound catabolic process carnitine metabolic process organonitrogen compound metabolic process catabolic process amino-acid betaine catabolic process cellular metabolic process amino-acid betaine metabolic process cellular modified amino acid metabolic process carnitine catabolic process organic substance metabolic process metabolic process cellular process organic substance catabolic process cellular modified amino acid catabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023606	CoA-transferase family III domain 1 superfamily	Homologous Superfamily
A	IPR044855	CoA-transferase family III domain 3 superfamily	Homologous Superfamily
A	IPR003673	CoA-transferase family III	Family
A	IPR023452	L-carnitine CoA-transferase CaiB	Family

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

Chains	Enzyme Name	Description	Catalytic Residues
A	L-carnitine CoA-transferase M-CSA #531	The enzymes required for the metabolism of L-carnitine in Escherichia coli is encoded by the cai operon. CaiB, a class III CoA transferase, alongside formyl-CoA transferase. CaiB catalyses the reversible transfer of the CoA group from crotonobetainyl-CoA to L-carnitine.	Defined by 1 residue: ASP:A-172 [auth A-169] \| Explore in 3D: M-CSA Motif Definition At least 2 residues must be present to support Structure Motif searching. EC: 2.8.3 (PDB Primary Data)

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.