Annotations: 1DXQ

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1dxqa_	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Quinone reductase	NAD(P)H:quinone reductase	MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1dxqb_	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Quinone reductase	NAD(P)H:quinone reductase	MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
C	d1dxqc_	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Quinone reductase	NAD(P)H:quinone reductase	MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
D	d1dxqd_	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Quinone reductase	NAD(P)H:quinone reductase	MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Quinone reductase	8031708	4003674	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Flavoproteins	8044086	3001217	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Flavoproteins	8044086	3001217	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Flavoproteins	8044086	3001217	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Flavoproteins	8044086	3001217	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	FMN_red	e1dxqA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: FMN_red	ECOD (1.6)
B	FMN_red	e1dxqB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: FMN_red	ECOD (1.6)
C	FMN_red	e1dxqC1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: FMN_red	ECOD (1.6)
D	FMN_red	e1dxqD1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: FMN_red	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
B	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
C	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
D	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, C, D	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	QUINONE REDUCTASE	oxidoreductase activity NADH:ubiquinone reductase (non-electrogenic) 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 activity superoxide dismutase activity oxidoreductase activity, acting on superoxide radicals as acceptor antioxidant activity NAD(P)H dehydrogenase (quinone) activity NADPH dehydrogenase (quinone) activity identical protein binding protein binding binding	response to acid chemical response to stimulus response to chemical response to L-glutamine response to oxygen-containing compound response to nitrogen compound response to amino acid response to xenobiotic stimulus nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process cellular metabolic process primary metabolic process nucleotide metabolic process NADH oxidation response to acid chemical response to stimulus response to chemical response to L-glutamine response to oxygen-containing compound response to nitrogen compound response to amino acid response to xenobiotic stimulus nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process cellular metabolic process primary metabolic process nucleotide metabolic process NADH oxidation NAD metabolic process NADH metabolic process purine-containing compound metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process organophosphate metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process pyridine-containing compound metabolic process metabolic process cellular process small molecule metabolic process phosphorus metabolic process pyridine nucleotide metabolic process vitamin E metabolic process fat-soluble vitamin metabolic process organic hydroxy compound metabolic process vitamin metabolic process cellular response to stimulus cellular response to oxidative stress detoxification reactive oxygen species metabolic process cellular response to chemical stress response to superoxide cellular oxidant detoxification cellular response to oxygen radical cellular response to reactive oxygen species cellular response to stress response to stress cellular detoxification cellular response to oxygen-containing compound response to reactive oxygen species response to toxic substance removal of superoxide radicals superoxide metabolic process response to oxidative stress cellular response to chemical stimulus cellular response to superoxide cellular response to toxic substance response to oxygen radical regulation of biological process regulation of cellular process negative regulation of programmed cell death regulation of apoptotic process biological regulation negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death response to ischemia response to ketone response to lipid response to testosterone response to organic cyclic compound cellular ketone metabolic process ubiquinone metabolic process quinone metabolic process biological process involved in interspecies interaction between organisms immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism innate immune response response to external biotic stimulus catabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process neuron apoptotic process positive regulation of programmed cell death positive regulation of biological process positive regulation of apoptotic process positive regulation of neuron apoptotic process positive regulation of cellular process regulation of neuron apoptotic process cellular response to metal ion response to metal ion NADP metabolic process NADPH oxidation negative regulation of ferroptosis regulation of ferroptosis ferroptosis response to alcohol response to ethanol response to electrical stimulus response to abiotic stimulus cellular response to hydrogen peroxide response to hydrogen peroxide protein polyubiquitination protein ubiquitination macromolecule modification post-translational protein modification protein modification process protein modification by small protein conjugation protein modification by small protein conjugation or removal response to flavonoid cell redox homeostasis cellular homeostasis homeostatic process response to alkaloid negative regulation of catabolic process regulation of protein metabolic process negative regulation of metabolic process regulation of macromolecule metabolic process regulation of catabolic process negative regulation of protein catabolic process regulation of primary metabolic process regulation of metabolic process regulation of protein catabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process response to nutrient levels response to nutrient response to hydrogen sulfide response to lipopolysaccharide response to bacterium response to molecule of bacterial origin vitamin K metabolic process response to amine response to carbohydrate response to hormone response to endogenous stimulus response to estradiol response to tetrachloromethane	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection cell body neuronal cell body membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasm cellular anatomical entity cytosol somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection cell body neuronal cell body membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR003680	Flavodoxin-like fold	Domain
A, B, C, D	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily
A, B, C, D	IPR051545	NAD(P)H dehydrogenase (quinone)	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.