2VQ3

Crystal Structure of the Membrane Proximal Oxidoreductase Domain of Human Steap3, the Dominant Ferric Reductase of the Erythroid Transferrin Cycle

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	FNO-like	8063877	4000104	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	6-phosphogluconate dehydrogenase-like	8063878	3000048	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	6-phosphogluconate dehydrogenase-like	8063878	3000048	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	F420_oxidored	e2vq3A1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: F420_oxidored	ECOD (1.6)
B	F420_oxidored	e2vq3B1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: F420_oxidored	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03807	NADP oxidoreductase coenzyme F420-dependent (F420_oxidored)	NADP oxidoreductase coenzyme F420-dependent	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	METALLOREDUCTASE STEAP3	oxidoreductase activity, acting on metal ions oxidoreductase activity oxidoreductase activity, acting on metal ions, NAD or NADP as acceptor catalytic activity cupric reductase activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding oxidoreductase activity, acting on metal ions oxidoreductase activity oxidoreductase activity, acting on metal ions, NAD or NADP as acceptor catalytic activity cupric reductase activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding small molecule binding tetrapyrrole binding heme binding ferric-chelate reductase (NADPH) activity ferric-chelate reductase activity cation binding metal ion binding identical protein binding protein binding	cellular process cell cycle localization transport copper ion import copper ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport protein localization establishment of protein localization cellular localization cellular process cell cycle localization transport copper ion import copper ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport protein localization establishment of protein localization cellular localization nitrogen compound transport secretion organic substance transport establishment of protein localization to extracellular region export from cell protein secretion protein localization to extracellular region secretion by cell protein transport cellular macromolecule localization macromolecule localization apoptotic process cell death programmed cell death iron ion transport transferrin transport	membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle endosome membrane membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle endosome membrane membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane cell periphery plasma membrane late endosome multivesicular body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013130	Ferric reductase transmembrane component-like domain	Domain
A, B	IPR028939	Pyrroline-5-carboxylate reductase, catalytic, N-terminal	Domain
A, B	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q658P3	severe congenital hypochromic anemia with ringed sideroblasts anemia, hypochromic microcytic with iron overload large cell medulloblastoma malignant ependymoma osteosarcoma pituitary cancer tuberculosis cystic fibrosis lung adenocarcinoma malignant glioma pancreatic ductal adenocarcinoma glioblastoma lung carcinoma medulloblastoma pilocytic astrocytoma severe congenital hypochromic anemia with ringed sideroblasts anemia, hypochromic microcytic with iron overload large cell medulloblastoma malignant ependymoma osteosarcoma pituitary cancer tuberculosis cystic fibrosis lung adenocarcinoma malignant glioma pancreatic ductal adenocarcinoma glioblastoma lung carcinoma medulloblastoma pilocytic astrocytoma Sjogren syndrome

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.