Annotations: 3Q1H

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3q1ha1	Alpha and beta proteins (a/b)	Dihydrofolate reductase-like	Dihydrofolate reductase-like	automated matches	automated matches	(Yersinia pestis CO92 ) [TaxId: 214092 ],	SCOPe (2.08)
A	d3q1ha2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Yersinia pestis CO92 ) [TaxId: 214092 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Dihydrofolate reductases	8068956	4000755	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Dihydrofolate reductase-like	8068957	3001255	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	DHFR_1	e3q1hA1	A: a/b three-layered sandwiches	X: Dihydrofolate reductases (From Topology)	H: Dihydrofolate reductases (From Topology)	T: Dihydrofolate reductases	F: DHFR_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.430.10	Alpha Beta	3-Layer(aba) Sandwich	Dihydrofolate Reductase, subunit A	Dihydrofolate Reductase, subunit A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00186	Dihydrofolate reductase (DHFR_1)	Dihydrofolate reductase	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Dihydrofolate reductase	dihydrofolate reductase activity 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 catalytic activity binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding NADP binding small molecule binding	cellular metabolic process small molecule metabolic process metabolic process cellular process one-carbon metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process cellular nitrogen compound biosynthetic process organic substance metabolic process heterocycle metabolic process organic substance biosynthetic process nitrogen compound metabolic process folic acid-containing compound biosynthetic process organonitrogen compound metabolic process cellular metabolic process small molecule metabolic process metabolic process cellular process one-carbon metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process cellular nitrogen compound biosynthetic process organic substance metabolic process heterocycle metabolic process organic substance biosynthetic process nitrogen compound metabolic process folic acid-containing compound biosynthetic process organonitrogen compound metabolic process cellular nitrogen compound metabolic process heterocycle biosynthetic process cellular modified amino acid metabolic process organic cyclic compound metabolic process biosynthetic process cellular modified amino acid biosynthetic process aromatic compound biosynthetic process organic cyclic compound biosynthetic process folic acid-containing compound metabolic process pteridine-containing compound biosynthetic process tetrahydrofolate biosynthetic process pteridine-containing compound metabolic process tetrahydrofolate metabolic process cellular aromatic compound metabolic process oxoacid metabolic process dicarboxylic acid metabolic process dihydrofolate metabolic process carboxylic acid metabolic process organic acid metabolic process vitamin metabolic process amide metabolic process water-soluble vitamin metabolic process folic acid metabolic process serine family amino acid metabolic process amino acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process glycine metabolic process glycine biosynthetic process small molecule biosynthetic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process proteinogenic amino acid biosynthetic process serine family amino acid biosynthetic process alpha-amino acid biosynthetic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR024072	Dihydrofolate reductase-like domain superfamily	Homologous Superfamily
A	IPR001796	Dihydrofolate reductase domain	Domain
A	IPR017925	Dihydrofolate reductase conserved site	Conserved Site
A	IPR012259	Dihydrofolate reductase	Family

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.