Annotations: 8QA5

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF21895	MTHFR, SAM-binding regulatory domain (MTHFR_C)	MTHFR, SAM-binding regulatory domain	This is the C-terminal SAM-binding regulatory domain of 5,10-methylenetetrahydrofolate reductase (MTHFR) that follows the catalytic domain and is unique to eukaryotes. This domain provides the required interface for MTHFR homo-dimerization, thus posi ...	This is the C-terminal SAM-binding regulatory domain of 5,10-methylenetetrahydrofolate reductase (MTHFR) that follows the catalytic domain and is unique to eukaryotes. This domain provides the required interface for MTHFR homo-dimerization, thus positioning the N-terminal serine-rich phosphorylation region near the SAM-binding site. The core of this domain comprises two mixed beta-sheets, one of which flanked with helices. This regulatory domain represents distinct architecture from the classical SAM-dependent methyltransferases and non-methyltransferases [1].	Domain
A, B	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	Methylenetetrahydrofolate reductase (NADPH)	FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule 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 FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule 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 purine nucleotide binding adenyl nucleotide binding NADP binding protein-containing complex binding methylenetetrahydrofolate reductase (NADPH) activity modified amino acid binding	response to acid chemical response to stimulus response to chemical response to amino acid response to xenobiotic stimulus response to vitamin B2 response to nutrient levels response to nutrient response to oxygen-containing compound response to nitrogen compound response to vitamin S-adenosylmethionine metabolic process sulfur compound metabolic process metabolic process response to acid chemical response to stimulus response to chemical response to amino acid response to xenobiotic stimulus response to vitamin B2 response to nutrient levels response to nutrient response to oxygen-containing compound response to nitrogen compound response to vitamin S-adenosylmethionine metabolic process sulfur compound metabolic process metabolic process cellular process response to peptide response to cytokine response to interleukin-1 folic acid-containing compound metabolic process tetrahydrofolate interconversion modified amino acid metabolic process small molecule metabolic process tetrahydrofolate metabolic process pteridine-containing compound metabolic process one-carbon metabolic process oxoacid metabolic process sulfur amino acid metabolic process aspartate family amino acid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process methionine metabolic process organic acid metabolic process alpha-amino acid metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process multicellular organismal process embryonic epithelial tube formation chordate embryonic development tube formation embryo development multicellular organism development epithelial tube formation tube morphogenesis primary neural tube formation embryo development ending in birth or egg hatching anatomical structure development epithelial tube morphogenesis system development developmental process morphogenesis of embryonic epithelium epithelium development neural tube development tube development embryonic morphogenesis morphogenesis of an epithelium nervous system development tissue development anatomical structure morphogenesis tissue morphogenesis neural tube closure neural tube formation anatomical structure formation involved in morphogenesis tube closure homocysteine metabolic process non-proteinogenic amino acid metabolic process cellular component organization chromatin organization heterochromatin organization cellular component organization or biogenesis aspartate family amino acid biosynthetic process organic acid biosynthetic process carboxylic acid biosynthetic process methionine biosynthetic process small molecule biosynthetic process L-amino acid biosynthetic process amino acid biosynthetic process sulfur compound biosynthetic process biosynthetic process proteinogenic amino acid biosynthetic process sulfur amino acid biosynthetic process alpha-amino acid biosynthetic process response to decreased oxygen levels response to hypoxia response to stress response to oxygen levels response to abiotic stimulus response to folic acid	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR029041	FAD-linked oxidoreductase-like	Homologous Superfamily
A, B	IPR004621	Eukaryotic-type methylenetetrahydrofolate reductase	Family
A, B	IPR003171	Methylenetetrahydrofolate reductase-like	Family
A, B	IPR053806	MTHFR, SAM-binding regulatory domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P42898	thrombophilia neural tube defect schizophrenia Down syndrome pulmonary embolism homocystinuria due to methylene tetrahydrofolate reductase deficiency rheumatoid arthritis spina bifida leukopenia Alzheimer disease Microvascular Angina homocystinuria hyperhomocysteinemia B-cell chronic lymphocytic leukemia follicular lymphoma thrombophilia neural tube defect schizophrenia Down syndrome pulmonary embolism homocystinuria due to methylene tetrahydrofolate reductase deficiency rheumatoid arthritis spina bifida leukopenia Alzheimer disease Microvascular Angina homocystinuria hyperhomocysteinemia B-cell chronic lymphocytic leukemia follicular lymphoma neutropenia thrombocytopenia vascular disease anencephaly endogenous depression Crohn disease spinal cord disease malignant colon neoplasm graft versus host disease cervical cancer thyrotoxicosis allergic disease myelomeningocele coronary restenosis neural tube defects, folate-sensitive inherited blood coagulation disorder male infertility bipolar disorder breast carcinoma tethered spinal cord syndrome melancholia diabetic peripheral angiopathy alopecia prostate cancer lymphoma urinary bladder cancer colorectal cancer uterine cervix carcinoma in situ anemia nervous system disorder endometrial carcinoma female infertility brain ischemia intracranial sinus thrombosis cardiovascular disease kidney disease cerebrovascular disorder hematologic disease liver disease clubfoot colorectal carcinoma inborn errors of metabolism reticulum cell sarcoma autism skin disease major depressive disorder benign colon neoplasm intellectual disability breast cancer non-Hodgkin lymphoma osteosarcoma peripheral nervous system disease leukoencephalopathy with vanishing white matter cleft lip colonic neoplasm androgenetic alopecia drug-induced liver injury hypertensive disorder congenital heart disease endometrial cancer inborn vitamin B12 deficiency Crohn's colitis neurotic disorder cystic fibrosis gastric cancer non-small cell lung carcinoma isolated anencephaly/exencephaly gastrointestinal mucositis ovarian cancer depressive disorder cervical intraepithelial neoplasia peripheral neuropathy thrombophilia due to thrombin defect hemochromatosis type 1 childhood acute lymphoblastic leukemia digestive system disease psoriasis drug-induced hepatitis myotonic dystrophy type 1 ileocolitis coronary artery disease atrial fibrillation craniorachischisis lymphosarcoma neurenteric cyst iniencephaly gastric neoplasm nutritional deficiency disease sudden sensorineural hearing loss acute kidney failure gastrointestinal stromal tumor pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia diastematomyelia thrombotic disease hemophilia B lung benign neoplasm alopecia areata hereditary diffuse gastric adenocarcinoma urinary bladder neoplasm

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.