Annotations: 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)
B	SCOP2B Superfamily	6-phosphogluconate dehydrogenase-like	8063878	3000048	SCOP2B (2022-06-29)
A	SCOP2 Family	FNO-like	8063877	4000104	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	6-phosphogluconate dehydrogenase-like	8063878	3000048	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Redoxin	e2vq3B1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: Redoxin	ECOD (v294.2)
A	Redoxin	e2vq3A1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: Redoxin	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	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	FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding tetrapyrrole binding heme binding oxidoreductase activity, acting on metal ions oxidoreductase activity ferric-chelate reductase (NADPH) activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding tetrapyrrole binding heme binding oxidoreductase activity, acting on metal ions oxidoreductase activity ferric-chelate reductase (NADPH) activity oxidoreductase activity, acting on metal ions, NAD or NADP as acceptor ferric-chelate reductase activity catalytic activity cation binding metal ion binding identical protein binding protein binding cupric reductase (NADH) activity	localization transport copper ion import copper ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport iron ion transport establishment of protein localization secretion establishment of protein localization to extracellular region export from cell localization transport copper ion import copper ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport iron ion transport establishment of protein localization secretion establishment of protein localization to extracellular region export from cell protein secretion protein localization to extracellular region secretion by cell protein transport macromolecule localization cellular process intracellular protein localization apoptotic process cell death programmed cell death	membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle endosome membrane membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure 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
A, B	IPR051267	STEAP family metalloreductases	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	: 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

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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.