5B58

Inward-facing conformation of ABC heme importer BhuUV in complex with periplasmic heme binding protein BhuT from Burkholderia cenocepacia

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	BtuC-like	8072760	3000523	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	BtuC-like	8072760	3000523	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	FecCD	e5b58A1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold (From Topology)	H: Type II ABC importer transmembrane domain fold (From Topology)	T: Type II ABC importer transmembrane domain fold	F: FecCD	ECOD (1.6)
B	FecCD	e5b58B1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold (From Topology)	H: Type II ABC importer transmembrane domain fold (From Topology)	T: Type II ABC importer transmembrane domain fold	F: FecCD	ECOD (1.6)
C	ABC_tran	e5b58C1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_tran	ECOD (1.6)
D	ABC_tran	e5b58D1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_tran	ECOD (1.6)
E [auth T]	Peripla_BP_2_N	e5b58T1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Chelatase-like	F: Peripla_BP_2_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.3470.10	Mainly Alpha	Orthogonal Bundle	ABC transporter involved in vitamin B12 uptake, BtuC	ABC transporter involved in vitamin B12 uptake, BtuC	CATH (4.3.0)
B	1.10.3470.10	Mainly Alpha	Orthogonal Bundle	ABC transporter involved in vitamin B12 uptake, BtuC	ABC transporter involved in vitamin B12 uptake, BtuC	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
E [auth T]	3.40.50.1980	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nitrogenase molybdenum iron protein domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, D	PF00005	ABC transporter (ABC_tran)	ABC transporter	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are comp ...	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are composed of two copies of this domain and two copies of a transmembrane domain Pfam:PF00664. These four domains may belong to a single polypeptide as in Swiss:P13569, or belong in different polypeptide chains.	Domain
E [auth T]	PF01497	Periplasmic binding protein (Peripla_BP_2)	Periplasmic binding protein	This is sensor domain found in bacterial periplasmic binding proteins, several of which are involved in iron and cobalamin transport [1,2,3]. Among its ligands are siderophores bacillibactin, enterobactin and iron(III)-hydroxamates (Matilla et. al., ...	This is sensor domain found in bacterial periplasmic binding proteins, several of which are involved in iron and cobalamin transport [1,2,3]. Among its ligands are siderophores bacillibactin, enterobactin and iron(III)-hydroxamates (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1 https://doi.org/10.1093/femsre/fuab043).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Putative hemin ABC transport system, membrane protein	transporter activity transmembrane transporter activity	import into cell siderophore-dependent iron import into cell cellular localization inorganic ion homeostasis iron import into cell transport homeostatic process metal ion transport localization intracellular iron ion homeostasis intracellular monoatomic cation homeostasis establishment of localization in cell monoatomic ion homeostasis intracellular chemical homeostasis import into cell siderophore-dependent iron import into cell cellular localization inorganic ion homeostasis iron import into cell transport homeostatic process metal ion transport localization intracellular iron ion homeostasis intracellular monoatomic cation homeostasis establishment of localization in cell monoatomic ion homeostasis intracellular chemical homeostasis monoatomic ion transport monoatomic cation homeostasis monoatomic cation transport intracellular monoatomic ion homeostasis iron ion transport establishment of localization cellular homeostasis chemical homeostasis transition metal ion transport cellular process iron coordination entity transport	cell periphery cellular anatomical structure plasma membrane membrane
C, D	Hemin import ATP-binding protein HmuV	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity	-	cell periphery cellular anatomical structure plasma membrane membrane
E [auth T]	Putative hemin transport system, substrate-binding protein	cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR037294	ABC transporter, BtuC-like	Homologous Superfamily
A, B	IPR000522	ABC transporter, permease protein, BtuC-like	Family
C, D	IPR003593	AAA+ ATPase domain	Domain
C, D	IPR017871	ABC transporter-like, conserved site	Conserved Site
C, D	IPR003439	ABC transporter-like, ATP-binding domain	Domain
C, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
E [auth T]	IPR054828	Vitamin B12-binding protein	Family
E [auth T]	IPR006311	Twin-arginine translocation pathway, signal sequence	Conserved Site
E [auth T]	IPR002491	ABC transporter periplasmic binding domain	Domain
E [auth T]	IPR050902	ABC Transporter Solute-Binding	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D	OPM	Transmembrane	Alpha-helical polytopic	ABC transporters	FecCD transport family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	ATP Binding Cassette (ABC) Transporters	BhuU/BhuV haem importer, inward facing

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 R01GM157729.