Methylenetetrahydrofolate reductase 1

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functionⁱ

<p>This subsection of the ‘Function’ section describes the catalytic activity of an enzyme, i.e. the chemical reaction it catalyzes. This information usually correlates with the presence of an EC (Enzyme Commission) number in the ‘Names and taxonomy’ section.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityⁱ

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactorⁱ

<p>This subsection of the ‘Function’ section describes an enzyme regulatory mechanism and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/enzyme_regulation' target='_top'>More...</a></p>Enzyme regulationⁱ

Sites

Regions

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functionⁱ

• methylenetetrahydrofolate reductase (NAD(P)H) activity Source: UniProtKB-EC

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Biological processⁱ

• methionine metabolic process Source: InterPro
• tetrahydrofolate interconversion Source: UniProtKB-UniPathway

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsⁱ

Enzyme and pathway databases

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyⁱ

Organism-specific databases

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingⁱ

Molecule processing

Proteomic databases

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressionⁱ

Gene expression databases

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactionⁱ

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">‘Interaction’</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">‘Function’</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structureⁱ

Protein-protein interaction databases

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structureⁱ

3D structure databases

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsⁱ

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesⁱ

Phylogenomic databases

Family and domain databases

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including length and molecular weight.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequenceⁱ

<p>This subsection of the ‘Sequence’ section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusⁱ: Complete.

        10         20         30         40         50
MKVIEKILEA AGDGRTAFSF EYFPPKTEEG VENLFERMDR MVAHGPSFCD 
        60         70         80         90        100
ITWGAGGSTA DLTLEIANRM QNMVCVETMM HLTCTNMPVE KIDHALETIK 
       110        120        130        140        150
SNGIQNVLAL RGDPPHGQDK FVQVEGGFAC ALDLVQHIRA KYGDYFGITV 
       160        170        180        190        200
AGYPEAHPDA IQGEGGATLE AYSNDLAYLK RKVDAGADLI VTQLFYDTDI 
       210        220        230        240        250
FLKFVNDCRQ IGITCPIVPG IMPINNYKGF LRMTGFCKTK IPSEITAALD 
       260        270        280        290        300
PIKDNEEAVR QYGIHLGTEM CKKILATGIK TLHLYTLNMD KSAIGILMNL 
       310        320        330        340        350
GLIEESKVSR PLPWRPATNV FRVKEDVRPI FWANRPKSYL KRTLGWDQYP 
       360        370        380        390        400
HGRWGDSRNP SYGALTDHQF TRPRGRGKKL QEEWAVPLKS VEDISERFTN 
       410        420        430        440        450
FCQGKLTSSP WSELDGLQPE TKIIDDQLVN INQKGFLTIN SQPAVNGEKS 
       460        470        480        490        500
DSPTVGWGGP GGYVYQKAYL EFFCAKEKLD QLIEKIKAFP SLTYIAVNKD 
       510        520        530        540        550
GETFSNISPN AVNAVTWGVF PGKEIIQPTV VDHASFMVWK DEAFEIWTRG 
       560        570        580        590 
WGCMFPEGDS SRELLEKVQK TYYLVSLVDN DYVQGDLFAA FKI 

Sequence databases

Genome annotation databases

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsⁱ

• 100% Identity
• 90% Identity
• 50% Identity

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesⁱ

Sequence databases

3D structure databases

Protein-protein interaction databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Gene expression databases

Family and domain databases

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationⁱ

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousⁱ

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywords - Technical termⁱ

Documents

1. PATHWAY comments
   Index of metabolic and biosynthesis pathways
2. SIMILARITY comments
   Index of protein domains and families