7LB8 | pdb_00007lb8

Structure of a ferrichrome importer FhuCDB from E. coli

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)
B [auth D]	SCOP2B Superfamily	Helical backbone metal receptor	8040009	3001679	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)
D [auth C]	ABC_tran	e7lb8C1	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)
C [auth U]	ABC_tran	e7lb8U1	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)
B [auth D]	Peripla_BP_2_N	e7lb8D1	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 [auth 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 (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth U], D [auth C]	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
B [auth D]	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
A [auth B]	PF01032	FecCD transport family (FecCD)	FecCD transport family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth U], D [auth C]	Iron(3+)-hydroxamate import ATP-binding protein FhuC	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 ABC-type ferric hydroxamate transporter activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity iron chelate transmembrane transporter activity transporter activity transmembrane transporter activity ATP-dependent activity monoatomic cation transmembrane transporter activity ferric iron transmembrane transporter activity iron ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transition metal ion transmembrane transporter activity metal ion transmembrane transporter activity 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 siderophore-iron transmembrane transporter activity siderophore uptake transmembrane transporter activity	import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane transport localization intracellular iron ion homeostasis intracellular monoatomic cation homeostasis establishment of localization in cell monoatomic ion homeostasis import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane 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 iron ion import across plasma membrane intracellular monoatomic ion homeostasis import across plasma membrane iron ion transport iron ion transmembrane transport establishment of localization inorganic cation import across plasma membrane transmembrane transport cellular homeostasis chemical homeostasis inorganic ion import across plasma membrane transition metal ion transport cellular process siderophore-iron import into cell ferric-hydroxamate import into cell siderophore-dependent iron import pathway iron coordination entity transport	ATPase dependent transmembrane transport complex protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing
B [auth D]	Iron(3+)-hydroxamate-binding protein FhuD	-	import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane transport localization intracellular iron ion homeostasis intracellular monoatomic cation homeostasis establishment of localization in cell monoatomic ion homeostasis import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane 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 iron ion import across plasma membrane intracellular monoatomic ion homeostasis import across plasma membrane iron ion transport iron ion transmembrane transport establishment of localization inorganic cation import across plasma membrane transmembrane transport cellular homeostasis chemical homeostasis inorganic ion import across plasma membrane transition metal ion transport cellular process siderophore-iron import into cell ferric-hydroxamate import into cell siderophore-dependent iron import pathway iron coordination entity transport	ATPase dependent transmembrane transport complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex outer membrane-bounded periplasmic space cell envelope ATPase dependent transmembrane transport complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex outer membrane-bounded periplasmic space cell envelope periplasmic space
A [auth B]	Iron(3+)-hydroxamate import system permease protein FhuB	siderophore-iron transmembrane transporter activity iron chelate transmembrane transporter activity siderophore uptake transmembrane transporter activity transporter activity transmembrane transporter activity	import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane transport localization intracellular iron ion homeostasis intracellular monoatomic cation homeostasis establishment of localization in cell monoatomic ion homeostasis import into cell cellular localization inorganic ion homeostasis iron import into cell homeostatic process transport monoatomic ion transmembrane transport metal ion transport monoatomic cation transmembrane 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 iron ion import across plasma membrane intracellular monoatomic ion homeostasis import across plasma membrane iron ion transport iron ion transmembrane transport establishment of localization inorganic cation import across plasma membrane transmembrane transport cellular homeostasis chemical homeostasis inorganic ion import across plasma membrane transition metal ion transport cellular process siderophore-iron import into cell ferric-hydroxamate import into cell siderophore-dependent iron import pathway iron coordination entity transport	ATPase dependent transmembrane transport complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth U], D [auth C]	IPR017871	ABC transporter-like, conserved site	Conserved Site
C [auth U], D [auth C]	IPR003439	ABC transporter-like, ATP-binding domain	Domain
C [auth U], D [auth C]	IPR003593	AAA+ ATPase domain	Domain
C [auth U], D [auth C]	IPR051535	Bacterial siderophore ABC transporter ATP-binding	Family
C [auth U], D [auth C]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B [auth D]	IPR051313	Bacterial iron-siderophore binding	Family
B [auth D]	IPR002491	ABC transporter periplasmic binding domain	Domain
A [auth B]	IPR037294	ABC transporter, BtuC-like	Homologous Superfamily
A [auth B]	IPR000522	ABC transporter, permease protein, BtuC-like	Family

Membrane Protein Annotation: OPM OPM Database Homepage

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

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth B], B [auth D], C [auth U], D [auth C]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth B], B [auth D], C [auth U], D [auth C]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth B], B [auth D], C [auth U], D [auth C]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	ATP Binding Cassette (ABC) Transporters	FhuCDB ferrichrome importer

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.