3QE2

Crystal Structure of Human NADPH-Cytochrome P450 Reductase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3qe2a2	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin synthase domain-like	NADPH-cytochrome p450 reductase FAD-binding domain-like	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d3qe2a1	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d3qe2a3	Alpha and beta proteins (a/b)	Ferredoxin reductase-like, C-terminal NADP-linked domain	Ferredoxin reductase-like, C-terminal NADP-linked domain	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d3qe2b2	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin synthase domain-like	NADPH-cytochrome p450 reductase FAD-binding domain-like	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d3qe2b1	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d3qe2b3	Alpha and beta proteins (a/b)	Ferredoxin reductase-like, C-terminal NADP-linked domain	Ferredoxin reductase-like, C-terminal NADP-linked domain	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Flavoproteins	8044084	3001217	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Flavoproteins	8044084	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	FAD_binding_1_1st	e3qe2A4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: FAD_binding_1_1st	ECOD (1.6)
A	FAD_binding_1_2nd	e3qe2A3	A: alpha bundles	X: NADPH-cytochrome p450 reductase helical insertion domain (From Topology)	H: NADPH-cytochrome p450 reductase helical insertion domain (From Topology)	T: NADPH-cytochrome p450 reductase helical insertion domain	F: FAD_binding_1_2nd	ECOD (1.6)
A	Flavodoxin_1	e3qe2A2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: Flavodoxin_1	ECOD (1.6)
A	NAD_binding_1	e3qe2A1	A: a/b three-layered sandwiches	X: Ferredoxin reductase-like, C-terminal NADP-linked domain (From Topology)	H: Ferredoxin reductase-like, C-terminal NADP-linked domain (From Topology)	T: Ferredoxin reductase-like, C-terminal NADP-linked domain	F: NAD_binding_1	ECOD (1.6)
B	FAD_binding_1_1st	e3qe2B4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: FAD_binding_1_1st	ECOD (1.6)
B	FAD_binding_1_2nd	e3qe2B1	A: alpha bundles	X: NADPH-cytochrome p450 reductase helical insertion domain (From Topology)	H: NADPH-cytochrome p450 reductase helical insertion domain (From Topology)	T: NADPH-cytochrome p450 reductase helical insertion domain	F: FAD_binding_1_2nd	ECOD (1.6)
B	Flavodoxin_1	e3qe2B2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: Flavodoxin_1	ECOD (1.6)
B	NAD_binding_1	e3qe2B3	A: a/b three-layered sandwiches	X: Ferredoxin reductase-like, C-terminal NADP-linked domain (From Topology)	H: Ferredoxin reductase-like, C-terminal NADP-linked domain (From Topology)	T: Ferredoxin reductase-like, C-terminal NADP-linked domain	F: NAD_binding_1	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)
A	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
A	1.20.990.10	Mainly Alpha	Up-down Bundle	NADPH-cytochrome p450 Reductase	Chain A, domain 3	CATH (4.3.0)
A	3.40.50.80	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module	CATH (4.3.0)
B	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
B	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	1.20.990.10	Mainly Alpha	Up-down Bundle	NADPH-cytochrome p450 Reductase	Chain A, domain 3	CATH (4.3.0)
B	3.40.50.80	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00667	FAD binding domain (FAD_binding_1)	FAD binding domain	This domain is found in sulfite reductase, NADPH cytochrome P450 reductase, Nitric oxide synthase and methionine synthase reductase.	Domain
A, B	PF00175	Oxidoreductase NAD-binding domain (NAD_binding_1)	Oxidoreductase NAD-binding domain	Xanthine dehydrogenases, that also bind FAD/NAD, have essentially no similarity.	Domain
A, B	PF00258	Flavodoxin (Flavodoxin_1)	Flavodoxin	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	NADPH--cytochrome P450 reductase	binding nucleotide binding FMN binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding purine nucleotide binding adenyl nucleotide binding NADP binding binding nucleotide binding FMN binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding purine nucleotide binding adenyl nucleotide binding NADP binding oxidoreductase activity NADPH-hemoprotein reductase activity oxidoreductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor catalytic activity flavin adenine dinucleotide binding	cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy cellular response to stimulus cellular response to chemical stimulus response to stimulus response to chemical cellular response to xenobiotic stimulus xenobiotic metabolic process response to xenobiotic stimulus cellular organofluorine metabolic process cellular organohalogen metabolic process cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy cellular response to stimulus cellular response to chemical stimulus response to stimulus response to chemical cellular response to xenobiotic stimulus xenobiotic metabolic process response to xenobiotic stimulus cellular organofluorine metabolic process cellular organohalogen metabolic process response to hormone response to endogenous stimulus regulation of molecular function positive regulation of molecular function regulation of monooxygenase activity positive regulation of monooxygenase activity regulation of catalytic activity biological regulation positive regulation of catalytic activity regulation of oxidoreductase activity positive regulation of oxidoreductase activity	membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle organelle intracellular membrane-bounded organelle organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle organelle intracellular membrane-bounded organelle organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001709	Flavoprotein pyridine nucleotide cytochrome reductase	Domain
A, B	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A, B	IPR003097	Sulfite reductase [NADPH] flavoprotein alpha-component-like, FAD-binding	Domain
A, B	IPR023173	NADPH-cytochrome p450 reductase, FAD-binding, alpha-helical domain superfamily	Homologous Superfamily
A, B	IPR008254	Flavodoxin/nitric oxide synthase	Domain
A, B	IPR023208	NADPH-cytochrome P450 reductase	Family
A, B	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily
A, B	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A, B	IPR001094	Flavodoxin-like	Domain
A, B	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain
A, B	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P16435	craniosynostosis congenital adrenal hyperplasia gliosarcoma urinary bladder cancer amenorrhea Antley-Bixler syndrome Antley-Bixler syndrome with genital anomalies and disordered steroidogenesis Learning Disturbance ovarian cancer learning disability malignant mesothelioma pancreatic ductal adenocarcinoma psoriasis urinary bladder neoplasm arthrogryposis craniosynostosis congenital adrenal hyperplasia gliosarcoma urinary bladder cancer amenorrhea Antley-Bixler syndrome Antley-Bixler syndrome with genital anomalies and disordered steroidogenesis Learning Disturbance ovarian cancer learning disability malignant mesothelioma pancreatic ductal adenocarcinoma psoriasis urinary bladder neoplasm arthrogryposis pituitary cancer tuberculosis astrocytic tumor congenital adrenal hyperplasia due to cytochrome P450 oxidoreductase deficiency

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.