Annotations: 9PXD

M20A Mutant of E. coli Dihydrofolate Reductase Complexed with Folate and Nicotinamide Adenine Dinucleotide Phosphate (oxidized form)

External Resource: Annotation

Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Dihydrofolate reductase	organic acid binding binding ion binding anion binding carboxylic acid binding heterocyclic compound binding methotrexate binding small molecule binding NADP+ binding nucleotide binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding NADP binding organic acid binding binding ion binding anion binding carboxylic acid binding heterocyclic compound binding methotrexate binding small molecule binding NADP+ binding nucleotide binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding NADP binding dihydrofolic acid binding modified amino acid binding NADPH binding vitamin binding folic acid binding 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	response to stimulus response to chemical response to xenobiotic stimulus response to methotrexate response to oxygen-containing compound response to nitrogen compound small molecule metabolic process metabolic process cellular process one-carbon metabolic process oxoacid metabolic process folic acid-containing compound metabolic process dicarboxylic acid metabolic process dihydrofolate metabolic process response to stimulus response to chemical response to xenobiotic stimulus response to methotrexate response to oxygen-containing compound response to nitrogen compound small molecule metabolic process metabolic process cellular process one-carbon metabolic process oxoacid metabolic process folic acid-containing compound metabolic process dicarboxylic acid metabolic process dihydrofolate metabolic process carboxylic acid metabolic process modified amino acid metabolic process pteridine-containing compound metabolic process folic acid metabolic process response to antibiotic folic acid biosynthetic process folic acid-containing compound biosynthetic process water-soluble vitamin biosynthetic process small molecule biosynthetic process modified amino acid biosynthetic process vitamin biosynthetic process vitamin metabolic process carboxylic acid biosynthetic process biosynthetic process pteridine-containing compound biosynthetic process dicarboxylic acid biosynthetic process tetrahydrofolate biosynthetic process tetrahydrofolate metabolic process 10-formyltetrahydrofolate metabolic process 10-formyltetrahydrofolate biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

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

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	OCS	Parent Component: CYS : AA0556 : L-cysteic acid (L-cysteine sulfonic acid) MOD:00460

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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.