Annotations: 5SV1

Structure of the ExbB/ExbD complex from E. coli at pH 4.5

External Resource: Annotation

Domain Annotation: ECOD Classification
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
Protein Modification Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	HTH_3	e5sv1B1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
C	HTH_3	e5sv1C1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
E	HTH_3	e5sv1E1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
G	HTH_3	e5sv1G1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
H	HTH_3	e5sv1H1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
I	HTH_3	e5sv1I1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
J	HTH_3	e5sv1J1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
F	HTH_3	e5sv1F1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
D	HTH_3	e5sv1D1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)
A	HTH_3	e5sv1A1	A: beta barrels	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: HTH_3	ECOD (v294.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	PF01618	MotA/TolQ/ExbB proton channel family (MotA_ExbB)	MotA/TolQ/ExbB proton channel family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
K [auth Y], L [auth Z]	Biopolymer transport protein ExbD	molecular transducer activity energy transducer activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity transporter activity transmembrane transporter activity	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of protein stability biological regulation regulation of biological quality protein stabilization intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of protein stability biological regulation regulation of biological quality protein stabilization localization nitrogen compound transport transport bacteriocin transport establishment of localization vitamin transport cobalamin transport establishment of protein localization protein transport macromolecule localization intracellular protein localization	cellular anatomical structure membrane cell periphery protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex transmembrane transporter complex transporter complex cell outer membrane external encapsulating structure extracellular region cell envelope outer membrane
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	Biopolymer transport protein ExbB	molecular transducer activity energy transducer activity transporter activity transmembrane transporter activity identical protein binding protein binding binding	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis protein import localization establishment of protein localization protein transport intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis protein import localization establishment of protein localization protein transport transport macromolecule localization intracellular protein localization establishment of localization regulation of protein stability biological regulation regulation of biological quality protein stabilization nitrogen compound transport bacteriocin transport vitamin transport cobalamin transport siderophore-iron import into cell import into cell cellular localization iron import into cell ferric-hydroxamate import into cell metal ion transport ferrichrome import into cell establishment of localization in cell monoatomic ion transport monoatomic cation transport siderophore-dependent iron import pathway iron ion transport transition metal ion transport cellular process iron coordination entity transport	cellular anatomical structure membrane cell periphery protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex transmembrane transporter complex transporter complex cell outer membrane external encapsulating structure extracellular region cell envelope outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
K [auth Y], L [auth Z]	IPR014170	TonB system transport protein ExbD type-1	Family
K [auth Y], L [auth Z]	IPR003400	Biopolymer transport protein ExbD/TolR	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR014164	TonB-system energizer ExbB type-1	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR002898	MotA/TolQ/ExbB proton channel	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR050790	ExbB/TolQ Biopolymer Transport	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth Y], L [auth Z]	OPM	Transmembrane	Alpha-helical polytopic	MotA/TolQ/ExbB channel	MotA/TolQ/ExbB channel

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth Y], L [auth Z]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth Y], L [auth Z]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth Y], L [auth Z]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Other Ion Channels	ExbB/ExbD complex associated with TonB complex, pH 7.0

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	MLY	Parent Component: LYS : AA0075 : N6,N6-dimethyl-L-lysine MOD:00084

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.