3FSU | pdb_00003fsu

Crystal Structure of Escherichia coli Methylenetetrahydrofolate Reductase Double Mutant Phe223LeuGlu28Gln complexed with methyltetrahydrofolate

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth E]	d3fsue_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	FAD-linked oxidoreductase	Methylenetetrahydrofolate reductase	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B [auth C]	d3fsuc_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	FAD-linked oxidoreductase	Methylenetetrahydrofolate reductase	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
A	d3fsua_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	FAD-linked oxidoreductase	Methylenetetrahydrofolate reductase	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth E]	SCOP2B Superfamily	FAD-linked oxidoreductase	8043872	3000663	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	FAD-linked oxidoreductase	8043872	3000663	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	FAD-linked oxidoreductase	8043872	3000663	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)
C [auth E]		e3fsuE1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: MTHFR	F:	ECOD (20:10:01)
B [auth C]		e3fsuC1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: MTHFR	F:	ECOD (20:10:01)
A		e3fsuA1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: MTHFR	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth E]	3.20.20.220	Alpha Beta	Alpha-Beta Barrel	TIM Barrel		CATH (4.3.0)
B [auth C]	3.20.20.220	Alpha Beta	Alpha-Beta Barrel	TIM Barrel		CATH (4.3.0)
A	3.20.20.220	Alpha Beta	Alpha-Beta Barrel	TIM Barrel		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth C], C [auth E]	PF02219	Methylenetetrahydrofolate reductase (MTHFR)	Methylenetetrahydrofolate reductase	This family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from bacteria and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The structure for this domain is known [1] to be a TIM barrel.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth C], C [auth E]	5,10-methylenetetrahydrofolate reductase	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 methylenetetrahydrofolate reductase [NAD(P)H] activity catalytic activity methylenetetrahydrofolate reductase (NADH) activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound 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 methylenetetrahydrofolate reductase [NAD(P)H] activity catalytic activity methylenetetrahydrofolate reductase (NADH) activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding protein binding protein-folding chaperone binding	folic acid-containing compound metabolic process tetrahydrofolate interconversion modified amino acid metabolic process metabolic process cellular process small molecule metabolic process tetrahydrofolate metabolic process pteridine-containing compound metabolic process one-carbon metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth C], C [auth E]	IPR029041	FAD-linked oxidoreductase-like	Homologous Superfamily
A, B [auth C], C [auth E]	IPR004620	5,10-methylenetetrahydrofolate reductase	Family
A, B [auth C], C [auth E]	IPR003171	Methylenetetrahydrofolate reductase-like, catalytic domain	Domain

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.