Annotations: 1SEP

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1sepa_	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Sepiapterin reductase	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	SDR-like	8057169	3000038	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	KR	e1sepA1	A: a/b three-layered sandwiches	X: HTH	H: HTH	T: winged helix domain	F: KR	ECOD (v294.1)

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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00106	short chain dehydrogenase (adh_short)	short chain dehydrogenase	This family contains a wide variety of dehydrogenases.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SEPIAPTERIN REDUCTASE	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity oxidoreductase activity oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on CH-OH group of donors sepiapterin reductase (NADP+) activity catalytic activity	aromatic amino acid metabolic process oxoacid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid metabolic process alpha-amino acid metabolic process L-amino acid metabolic process L-phenylalanine metabolic process proteinogenic amino acid metabolic process metabolic process cellular process small molecule metabolic process developmental process aromatic amino acid metabolic process oxoacid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid metabolic process alpha-amino acid metabolic process L-amino acid metabolic process L-phenylalanine metabolic process proteinogenic amino acid metabolic process metabolic process cellular process small molecule metabolic process developmental process multicellular organismal process cellular developmental process cell development nervous system development cell morphogenesis involved in neuron differentiation cell morphogenesis generation of neurons anatomical structure morphogenesis neurogenesis multicellular organism development neuron differentiation cell differentiation neuron development anatomical structure development system development amine metabolic process catecholamine metabolic process phenol-containing compound metabolic process catechol-containing compound metabolic process norepinephrine metabolic process biogenic amine metabolic process voluntary musculoskeletal movement multicellular organismal movement musculoskeletal movement system process nervous system process neuromuscular process polyol metabolic process small molecule biosynthetic process alcohol metabolic process diol biosynthetic process diol metabolic process biosynthetic process tetrahydrobiopterin biosynthetic process tetrahydrobiopterin metabolic process pteridine-containing compound biosynthetic process polyol biosynthetic process alcohol biosynthetic process pteridine-containing compound metabolic process pteridine metabolic process serotonin metabolic process indole-containing compound metabolic process regulation of multicellular organism growth regulation of biological process regulation of growth regulation of developmental growth regulation of developmental process developmental growth growth biological regulation multicellular organism growth regulation of multicellular organismal process dopamine metabolic process nitric oxide metabolic process nitric oxide biosynthetic process reactive nitrogen species metabolic process	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002347	Short-chain dehydrogenase/reductase SDR	Family
A	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A	IPR006393	Sepiapterin reductase	Family
A	IPR051721	Biopterin synthesis and organic compound reduction	Family

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.