METAP2
Methionine aminopeptidase 2
Also known as: MAP2, MAP2_HUMAN, MNPEP, p67
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P50579
- Gene
- METAP2
- Ensembl
- ENSG00000111142
- Chromosome
- 12
- Canonical length
- 478 aa
- Protein class
- Enzymes, Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Plasma membrane,Cytosol
OverviewNCBI Gene
The protein encoded by this gene is a member of the methionyl aminopeptidase family. The encoded protein functions both by protecting the alpha subunit of eukaryotic initiation factor 2 from inhibitory phosphorylation and by removing the amino-terminal methionine residue from nascent proteins. Increased expression of this gene is associated with various forms of cancer, and the anti-cancer drugs fumagillin and ovalicin inhibit the protein by irreversibly binding to its active site. Inhibitors of this gene have also been shown to be effective for the treatment of obesity. A pseudogene of this gene is located on chromosome 2. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2015]
Canonical amino-acid sequenceUniProt
478 residues, UniProt reviewed canonical sequence.
>P50579|METAP2
1 MAGVEEVAAS GSHLNGDLDP DDREEGAAST AEEAAKKKRR KKKKSKGPSA AGEQEPDKES
61 GASVDEVARQ LERSALEDKE RDEDDEDGDG DGDGATGKKK KKKKKKRGPK VQTDPPSVPI
121 CDLYPNGVFP KGQECEYPPT QDGRTAAWRT TSEEKKALDQ ASEEIWNDFR EAAEAHRQVR
181 KYVMSWIKPG MTMIEICEKL EDCSRKLIKE NGLNAGLAFP TGCSLNNCAA HYTPNAGDTT
241 VLQYDDICKI DFGTHISGRI IDCAFTVTFN PKYDTLLKAV KDATNTGIKC AGIDVRLCDV
301 GEAIQEVMES YEVEIDGKTY QVKPIRNLNG HSIGQYRIHA GKTVPIVKGG EATRMEEGEV
361 YAIETFGSTG KGVVHDDMEC SHYMKNFDVG HVPIRLPRTK HLLNVINENF GTLAFCRRWL
421 DRLGESKYLM ALKNLCDLGI VDPYPPLCDI KGSYTAQFEH TILLRPTCKE VVSRGDDYLocalizationUniProt · AlphaFold · HPA
Whether an antibody against METAP2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.34
- Highest tissue expression
- 117 nTPM
Expression across tissuesHPA
Tissue
- tonsil: 117 nTPM
- skeletal muscle: 112 nTPM
- bone marrow: 96 nTPM
- seminal vesicle: 95 nTPM
- liver: 79 nTPM
- tongue: 74 nTPM
Single-cell type
- erythrocyte progenitors: 730 nCPM
- late primary spermatocytes: 479 nCPM
- hepatocytes: 370 nCPM
- early primary spermatocytes: 339 nCPM
- basal keratinocytes: 316 nCPM
- suprabasal keratinocytes: 290 nCPM
Immune cell
- memory B-cell: 115 nTPM
- naive B-cell: 102 nTPM
- plasmacytoid DC: 86 nTPM
- naive CD4 T-cell: 80 nTPM
- basophil: 78 nTPM
- MAIT T-cell: 75 nTPM
Brain region
- hypothalamus: 73 nTPM
- white matter: 72 nTPM
- medulla oblongata: 71 nTPM
- pons: 64 nTPM
- cerebral cortex: 64 nTPM
- thalamus: 63 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.59
- gnomAD pLI
- 0
- gnomAD missense Z
- 2.94
- DepMap mean gene effect
- -0.63
- DepMap dependency class
- common
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
- aminopeptidase activity
- initiator methionyl aminopeptidase activity
- metal ion binding
- metalloaminopeptidase activity
- metalloexopeptidase activity
- RNA binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Peptidase M24
- Peptidase M24, methionine aminopeptidase
- Peptidase M24A, methionine aminopeptidase, subfamily 2, binding site
- Creatinase/aminopeptidase-like
- Winged helix-like DNA-binding domain superfamily
- Winged helix DNA-binding domain superfamily
- Metallopeptidase family M24
- Peptidase M24A, methionine aminopeptidase, subfamily 2
- Methionine Aminopeptidase Type 2
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of METAP2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads METAP2 as an antibody target. Whether an autoantibody or antibody against METAP2 could matter depends on whether native METAP2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
METAP2 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label METAP2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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