Annotations: 4PSY

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4psya_	Alpha and beta proteins (a/b)	Dihydrofolate reductase-like	Dihydrofolate reductase-like	Dihydrofolate reductases	Dihydrofolate reductase, prokaryotic type	(Escherichia coli str. K-12 substr. MC4100 ) [TaxId: 1403831 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DHFR_1	e4psyA1	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 Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	CSD	Parent Component: CYS RESID: AA0262 PSI-MOD : L-cysteine sulfinic acid MOD:00267

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.