Annotations: 1DHR

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1dhra_	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Dihydropteridin reductase (pteridine reductase)	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Short-chain dehydrogenases/reductases, SDR	8057170	4000029	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SDR-like	8057171	3000038	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)
A	adh_short_C2_1	e1dhrA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: adh_short_C2_1	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)

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	DIHYDROPTERIDINE REDUCTASE	NAD binding NADH binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding NADPH binding NADP binding oxidoreductase activity NAD binding NADH binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding NADPH binding NADP binding oxidoreductase activity oxidoreductase activity, acting on the CH-NH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on the CH-NH group of donors 6,7-dihydropteridine reductase activity catalytic activity identical protein binding protein binding	developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development system development catabolic process oxoacid metabolic process aromatic amino acid family catabolic process amino acid metabolic process organic acid catabolic process developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development system development catabolic process oxoacid metabolic process aromatic amino acid family catabolic process amino acid metabolic process organic acid catabolic process organic acid metabolic process alpha-amino acid metabolic process cellular catabolic process carboxylic acid catabolic process small molecule metabolic process amino acid catabolic process erythrose 4-phosphate/phosphoenolpyruvate family amino acid metabolic process L-phenylalanine catabolic process aromatic amino acid metabolic process carboxylic acid metabolic process L-amino acid catabolic process primary metabolic process L-amino acid metabolic process L-phenylalanine metabolic process proteinogenic amino acid metabolic process erythrose 4-phosphate/phosphoenolpyruvate family amino acid catabolic process alpha-amino acid catabolic process proteinogenic amino acid catabolic process metabolic process cellular process small molecule catabolic process response to stimulus response to metal ion response to chemical response to lead ion response to hormone response to endogenous stimulus response to peptide hormone response to oxygen-containing compound response to nitrogen compound response to glucagon cellular response to stimulus cellular response to chemical stimulus cellular response to xenobiotic stimulus response to xenobiotic stimulus 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 response to aluminum ion	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002347	Short-chain dehydrogenase/reductase SDR	Family
A	IPR020904	Short-chain dehydrogenase/reductase, conserved site	Conserved Site
A	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	6,7-dihydropteridine reductase M-CSA #491	Dihydropteridine reductase catalyses the NADH-mediated reduction of quinoid dihydrobioptertin to give tetrahydrobiopterin, which functions as an essential cofactor in the biosynthetic reactions that convert phenylalanine to tyrosine, tyrosine to dihydroxyphenylalanine and tryptophan to dihydroxytryptophan. These reactions are essential to the generation of the catecholamines. These reactions are found predominantly in nerve, liver and adrenal tissue, where the function of tetrahydrobiopterin has been clearly defined. However, the presence of tetrahydrobiopterin in other tissues is yet to be determined.	Defined by 2 residues: TYR:A-147 [auth A-146]LYS:A-151 [auth A-150] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 1.5.1.34 (UniProt) Search M-CSA Motif + EC 1.5.1.34

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.