Annotations: 8BY2

Structure of the K+/H+ exchanger KefC with GSH.

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	MIF4G	e8by2B1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: MIF4G	ECOD (v294.2)
A	MIF4G	e8by2A1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: MIF4G	ECOD (v294.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00999	Sodium/hydrogen exchanger, transmembrane (Na_H_Exchanger)	Sodium/hydrogen exchanger, transmembrane	Na/H antiporters are key transporters in maintaining the pH of actively metabolising cells. The molecular mechanisms of antiport are unclear. These antiporters contain 10-12 transmembrane regions (M) at the amino-terminus and a large cytoplasmic regi ...	Na/H antiporters are key transporters in maintaining the pH of actively metabolising cells. The molecular mechanisms of antiport are unclear. These antiporters contain 10-12 transmembrane regions (M) at the amino-terminus and a large cytoplasmic region at the carboxyl terminus. The transmembrane regions M3-M12 share identity with other members of the family. The M6 and M7 regions are highly conserved. Thus, this is thought to be the region that is involved in the transport of sodium and hydrogen ions. The cytoplasmic region has little similarity throughout the family. This entry represents the transmembrane region.	Domain
A, B	PF02254	TrkA-N domain (TrkA_N)	TrkA-N domain	This domain is found in a wide variety of proteins. These protein include potassium channels Swiss:P31069, phosphoesterases Swiss:Q59027, and various other transporters. This domain binds to NAD.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Glutathione-regulated potassium-efflux system protein KefC	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding toxic substance binding monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity potassium ion transmembrane transporter activity secondary active transmembrane transporter activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding toxic substance binding monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity potassium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity glutathione-regulated potassium exporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity solute:potassium antiporter activity enzyme binding	localization transport monoatomic ion transport potassium ion transport monoatomic cation transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport proton transmembrane transport monoatomic ion transmembrane transport cellular process response to ketone response to stimulus localization transport monoatomic ion transport potassium ion transport monoatomic cation transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport proton transmembrane transport monoatomic ion transmembrane transport cellular process response to ketone response to stimulus response to chemical response to oxygen-containing compound response to methylglyoxal chemical homeostasis homeostatic process regulation of pH biological regulation monoatomic ion homeostasis monoatomic cation homeostasis regulation of intracellular pH cellular homeostasis intracellular monoatomic cation homeostasis intracellular chemical homeostasis regulation of biological quality intracellular monoatomic ion homeostasis intracellular pH elevation response to hydrogen peroxide response to oxidative stress response to stress response to reactive oxygen species response to toxic substance	potassium:proton antiporter complex protein-containing complex cellular anatomical structure transmembrane transporter complex membrane membrane protein complex transporter complex cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006036	Potassium uptake protein TrkA	Family
A, B	IPR023941	Glutathione-regulated potassium-efflux system protein KefC	Family
A, B	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B	IPR006153	Cation/H+ exchanger, transmembrane domain	Domain
A, B	IPR003148	Regulator of K+ conductance, N-terminal lobe	Domain
A, B	IPR004771	K+/H+ exchanger	Domain
A, B	IPR038770	Sodium/solute symporter superfamily	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Antiporters	KefC K⁺/H⁺ exchanger

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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.