6MV2 | pdb_00006mv2

2.05A resolution structure of the CS-b5R domains of human Ncb5or (NADP+ form)

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	bCoV_S1_N	e6mv2A1	A: alpha bundles	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: bCoV_S1_N	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.790	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (utative)
A	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (utative)
A	3.40.50.80	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF04969	CS domain (CS)	CS domain	The CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain ...	The CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain is a binding module for HSP90, implying that CS domain-containing proteins are involved in recruiting heat shock proteins to multiprotein assemblies [2]. Two CS domains are found at the N-terminus of Ubiquitin carboxyl-terminal hydrolase 19 (USP19) (Swiss:O94966), these domains may play a role in the interaction of USP19 with cellular inhibitor of apoptosis 2 [3].	Domain
A	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	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	Cytochrome b5 reductase 4	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 NAD(P)H oxidase H2O2-forming activity oxidoreductase activity, acting on NAD(P)H, oxygen as acceptor binding tetrapyrrole binding heme binding cation binding ion binding metal ion 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 NAD(P)H oxidase H2O2-forming activity oxidoreductase activity, acting on NAD(P)H, oxygen as acceptor binding tetrapyrrole binding heme binding cation binding ion binding metal ion binding small molecule binding	reactive oxygen species metabolic process metabolic process cellular process superoxide metabolic process response to stimulus response to chemical response to antibiotic localization bicarbonate transport organic anion transport transport establishment of localization developmental process cellular developmental process reactive oxygen species metabolic process metabolic process cellular process superoxide metabolic process response to stimulus response to chemical response to antibiotic localization bicarbonate transport organic anion transport transport establishment of localization developmental process cellular developmental process cell differentiation anatomical structure development cell development detection of stimulus detection of chemical stimulus response to oxygen levels response to abiotic stimulus detection of oxygen establishment of protein localization nitrogen compound transport signaling hormone secretion cell communication protein localization to extracellular region peptide secretion secretion by cell signal release regulation of biological quality intracellular protein localization regulation of biological process secretion regulation of hormone levels biological regulation establishment of protein localization to extracellular region cell-cell signaling export from cell protein secretion peptide transport protein transport peptide hormone secretion macromolecule localization hormone transport insulin secretion chemical homeostasis homeostatic process glucose homeostasis carbohydrate homeostasis	cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane perinuclear region of cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR051872	Cytochrome b5/Flavoprotein Reductase	Family
A	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A	IPR037908	Cytochrome b5 reductase 4, p23 domain	Domain
A	IPR008978	HSP20-like chaperone	Homologous Superfamily
A	IPR036400	Cytochrome b5-like heme/steroid binding domain superfamily	Homologous Superfamily
A	IPR018506	Cytochrome b5, heme-binding site	Binding Site
A	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily
A	IPR008333	Flavoprotein pyridine nucleotide cytochrome reductase-like, FAD-binding domain	Domain
A	IPR007052	CS domain	Domain
A	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain
A	IPR001199	Cytochrome b5-like heme/steroid binding domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q7L1T6	glioblastoma Malignant neoplasm of breast psoriasis IgA glomerulonephritis medulloblastoma Sjogren syndrome lung cancer osteosarcoma

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.