7W3O | pdb_00007w3o

Crystal structure of human CYB5R3

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Riboflavin synthase domain-like	8042877	3001812	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8042879	3001461	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Riboflavin synthase domain-like	8042877	3001812	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8042879	3001461	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8042879	3001461	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Riboflavin synthase domain-like	8042877	3001812	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8042879	3001461	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Riboflavin synthase domain-like	8042877	3001812	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Riboflavin synthase domain-like	8042877	3001812	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8042879	3001461	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	SSF	e7w3oA1	A: alpha bundles	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: SSF	ECOD (develop294)
B	SSF	e7w3oB1	A: alpha bundles	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: SSF	ECOD (develop294)
C	SSF	e7w3oC1	A: alpha bundles	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: SSF	ECOD (develop294)
D	SSF	e7w3oD1	A: alpha bundles	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: SSF	ECOD (develop294)
E	SSF	e7w3oE1	A: alpha bundles	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: SSF	ECOD (develop294)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E	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, C, D, E	PF00970	Oxidoreductase FAD-binding domain (FAD_binding_6)	Oxidoreductase FAD-binding domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E	NADH-cytochrome b5 reductase 3 soluble form	FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity cytochrome-b5 reductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor catalytic activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity cytochrome-b5 reductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor catalytic activity cytochrome-b5 reductase activity, acting on NADH	secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process primary metabolic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process alcohol biosynthetic process small molecule metabolic process secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process primary metabolic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process alcohol biosynthetic process small molecule metabolic process metabolic process cellular process steroid biosynthetic process lipid metabolic process multicellular organismal process system process circulatory system process blood circulation nitric oxide metabolic process nitric oxide biosynthetic process reactive nitrogen species metabolic process	protein-containing complex cellular anatomical structure intracellular anatomical structure hemoglobin complex cytoplasm cytosol membrane-bounded organelle intracellular organelle mitochondrion organelle intracellular membrane-bounded organelle membrane catalytic complex nitric-oxide synthase complex protein-containing complex cellular anatomical structure intracellular anatomical structure hemoglobin complex cytoplasm cytosol membrane-bounded organelle intracellular organelle mitochondrion organelle intracellular membrane-bounded organelle membrane catalytic complex nitric-oxide synthase complex oxidoreductase complex mitochondrial membrane organelle envelope mitochondrial envelope organelle membrane cell projection sperm principal piece cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane bounded cell projection perinuclear theca cytoskeleton perinuclear region of cytoplasm membraneless organelle intracellular membraneless organelle sperm midpiece lytic vacuole intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen vacuolar lumen endomembrane system intracellular organelle lumen cytoplasmic vesicle vesicle lysosome vesicle lumen azurophil granule vacuole secretory granule lumen azurophil granule lumen organelle lumen secretory granule primary lysosome secretory vesicle sperm head-tail coupling apparatus cell periphery external encapsulating structure glycocalyx sperm glycocalyx organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane extracellular region lipid droplet organelle outer membrane bounding membrane of organelle mitochondrial outer membrane outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E	IPR001709	Flavoprotein pyridine nucleotide cytochrome reductase	Domain
A, B, C, D, E	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A, B, C, D, E	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A, B, C, D, E	IPR001834	NADH:cytochrome b5 reductase-like	Family
A, B, C, D, E	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily
A, B, C, D, E	IPR008333	Flavoprotein pyridine nucleotide cytochrome reductase-like, FAD-binding domain	Domain
A, B, C, D, E	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E	Pharos: P00387	methemoglobinemia methemoglobinemia due to deficiency of methemoglobin reductase Cyanosis osteosarcoma primitive neuroectodermal tumor swine influenza astrocytic tumor breast fibroadenoma ductal breast carcinoma in situ intellectual disability malignant glioma ovarian cancer pyruvate dehydrogenase E3 deficiency atypical teratoid rhabdoid tumor chronic obstructive pulmonary disease methemoglobinemia methemoglobinemia due to deficiency of methemoglobin reductase Cyanosis osteosarcoma primitive neuroectodermal tumor swine influenza astrocytic tumor breast fibroadenoma ductal breast carcinoma in situ intellectual disability malignant glioma ovarian cancer pyruvate dehydrogenase E3 deficiency atypical teratoid rhabdoid tumor chronic obstructive pulmonary disease glioblastoma large cell medulloblastoma maple syrup urine disease oligodendroglioma pilocytic astrocytoma rheumatoid arthritis breast carcinoma hereditary methemoglobinemia malignant ependymoma medulloblastoma

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.