Annotations: 3L9X

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Phospholip_A2_1	e3l9xB2	A: alpha bundles	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Phospholip_A2_1	ECOD (develop294)
B	N-glycanase_C	e3l9xB3	A: alpha bundles	X: DEATH domain	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: N-glycanase_C	ECOD (develop294)
A	Phospholip_A2_1	e3l9xA2	A: alpha bundles	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Phospholip_A2_1	ECOD (develop294)
A	N-glycanase_C	e3l9xA3	A: alpha bundles	X: DEATH domain	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: N-glycanase_C	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02525	Flavodoxin-like fold (Flavodoxin_2)	Flavodoxin-like fold	This family consists of a domain with a flavodoxin-like fold. The family includes bacterial and eukaryotic NAD(P)H dehydrogenase (quinone) EC:1.6.99.2. These enzymes catalyse the NAD(P)H-dependent two-electron reductions of quinones and protect cell ...	This family consists of a domain with a flavodoxin-like fold. The family includes bacterial and eukaryotic NAD(P)H dehydrogenase (quinone) EC:1.6.99.2. These enzymes catalyse the NAD(P)H-dependent two-electron reductions of quinones and protect cells against damage by free radicals and reactive oxygen species [1]. This enzyme uses a FAD co-factor. The equation for this reaction is:- NAD(P)H + acceptor <=> NAD(P)(+) + reduced acceptor. This enzyme is also involved in the bioactivation of prodrugs used in chemotherapy [1]. The family also includes acyl carrier protein phosphodiesterase EC:3.1.4.14. This enzyme converts holo-ACP to apo-ACP by hydrolytic cleavage of the phosphopantetheine residue from ACP [2]. This family is related to Pfam:PF03358 and Pfam:PF00258.	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, linker, ancillary protein kefF	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 FMN binding ion binding anion binding carbohydrate derivative binding ribonucleotide binding oxidoreductase activity NAD(P)H dehydrogenase (quinone) activity oxidoreductase activity, acting on NAD(P)H catalytic activity oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor NADH dehydrogenase (quinone) (non-electrogenic) activity NADH dehydrogenase activity NADPH dehydrogenase activity NADPH dehydrogenase (quinone) activity electron transfer activity	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 regulation of cellular pH 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 regulation of localization positive regulation of cation transmembrane transport regulation of cellular process regulation of potassium ion transport positive regulation of biological process potassium ion transmembrane transport regulation of monoatomic ion transmembrane transport positive regulation of monoatomic ion transport positive regulation of transmembrane transport positive regulation of monoatomic ion transmembrane transport regulation of metal ion transport positive regulation of cellular process regulation of biological process regulation of transport regulation of monoatomic ion transport regulation of potassium ion transmembrane transport positive regulation of potassium ion transport regulation of transmembrane transport positive regulation of transport positive regulation of potassium ion transmembrane transport regulation of monoatomic cation transmembrane transport	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
A, B	IPR023948	Glutathione-regulated potassium-efflux system ancillary protein KefF	Family
A, B	IPR003680	Flavodoxin-like fold	Domain
A, B	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily
A, B	IPR046980	Glutathione-regulated potassium-efflux system ancillary protein KefG/KefF	Family

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.