Annotations: 6T1T

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	e6t1tA2	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	e6t1tA4	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	e6t1tA1	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	e6t1tA3	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	e6t1tB2	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	e6t1tB1	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	e6t1tB3	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	e6t1tB4	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)

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 electron transfer activity NADPH dehydrogenase activity	organic hydroxy compound metabolic process steroid metabolic process sterol metabolic process lipid biosynthetic process alcohol metabolic process ergosterol biosynthetic process cellular lipid biosynthetic process small molecule metabolic process ergosterol metabolic process steroid biosynthetic process phytosteroid metabolic process secondary alcohol biosynthetic process small molecule biosynthetic process cellular metabolic process organic hydroxy compound metabolic process steroid metabolic process sterol metabolic process lipid biosynthetic process alcohol metabolic process ergosterol biosynthetic process cellular lipid biosynthetic process small molecule metabolic process ergosterol metabolic process steroid biosynthetic process phytosteroid metabolic process secondary alcohol biosynthetic process small molecule biosynthetic process cellular metabolic process primary metabolic process phytosteroid biosynthetic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process organic hydroxy compound biosynthetic process alcohol biosynthetic process cellular lipid metabolic process metabolic process cellular process lipid metabolic process	membrane-bounded organelle intracellular anatomical structure mitochondrial membrane mitochondrion membrane organelle outer membrane cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle organelle envelope bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane membrane-bounded organelle intracellular anatomical structure mitochondrial membrane mitochondrion membrane organelle outer membrane cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle organelle envelope bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane outer membrane cytoplasm organelle membrane cell periphery plasma membrane organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum 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

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.