ID H3D560_TETNG Unreviewed; 462 AA.
AC H3D560;
DT 18-APR-2012, integrated into UniProtKB/TrEMBL.
DT 18-APR-2012, sequence version 1.
DT 27-MAR-2024, entry version 81.
DE RecName: Full=Methionine aminopeptidase 2 {ECO:0000256|HAMAP-Rule:MF_03175};
DE Short=MAP 2 {ECO:0000256|HAMAP-Rule:MF_03175};
DE Short=MetAP 2 {ECO:0000256|HAMAP-Rule:MF_03175};
DE EC=3.4.11.18 {ECO:0000256|HAMAP-Rule:MF_03175};
DE AltName: Full=Initiation factor 2-associated 67 kDa glycoprotein {ECO:0000256|HAMAP-Rule:MF_03175};
DE AltName: Full=Peptidase M {ECO:0000256|HAMAP-Rule:MF_03175};
DE Short=p67 {ECO:0000256|HAMAP-Rule:MF_03175};
DE Short=p67eIF2 {ECO:0000256|HAMAP-Rule:MF_03175};
GN Name=METAP2 {ECO:0000256|HAMAP-Rule:MF_03175};
OS Tetraodon nigroviridis (Spotted green pufferfish) (Chelonodon
OS nigroviridis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Eupercaria; Tetraodontiformes; Tetradontoidea; Tetraodontidae; Tetraodon.
OX NCBI_TaxID=99883 {ECO:0000313|Ensembl:ENSTNIP00000015649.1, ECO:0000313|Proteomes:UP000007303};
RN [1] {ECO:0000313|Proteomes:UP000007303}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=15496914; DOI=10.1038/nature03025;
RA Jaillon O., Aury J.-M., Brunet F., Petit J.-L., Stange-Thomann N.,
RA Mauceli E., Bouneau L., Fischer C., Ozouf-Costaz C., Bernot A., Nicaud S.,
RA Jaffe D., Fisher S., Lutfalla G., Dossat C., Segurens B., Dasilva C.,
RA Salanoubat M., Levy M., Boudet N., Castellano S., Anthouard V., Jubin C.,
RA Castelli V., Katinka M., Vacherie B., Biemont C., Skalli Z., Cattolico L.,
RA Poulain J., De Berardinis V., Cruaud C., Duprat S., Brottier P.,
RA Coutanceau J.-P., Gouzy J., Parra G., Lardier G., Chapple C.,
RA McKernan K.J., McEwan P., Bosak S., Kellis M., Volff J.-N., Guigo R.,
RA Zody M.C., Mesirov J., Lindblad-Toh K., Birren B., Nusbaum C., Kahn D.,
RA Robinson-Rechavi M., Laudet V., Schachter V., Quetier F., Saurin W.,
RA Scarpelli C., Wincker P., Lander E.S., Weissenbach J., Roest Crollius H.;
RT "Genome duplication in the teleost fish Tetraodon nigroviridis reveals the
RT early vertebrate proto-karyotype.";
RL Nature 431:946-957(2004).
RN [2] {ECO:0000313|Ensembl:ENSTNIP00000015649.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (NOV-2023) to UniProtKB.
CC -!- FUNCTION: Cotranslationally removes the N-terminal methionine from
CC nascent proteins. The N-terminal methionine is often cleaved when the
CC second residue in the primary sequence is small and uncharged (Met-
CC Ala-, Cys, Gly, Pro, Ser, Thr, or Val). {ECO:0000256|HAMAP-
CC Rule:MF_03175, ECO:0000256|RuleBase:RU003653}.
CC -!- FUNCTION: Protects eukaryotic initiation factor EIF2S1 from
CC translation-inhibiting phosphorylation by inhibitory kinases such as
CC EIF2AK2/PKR and EIF2AK1/HCR. Plays a critical role in the regulation of
CC protein synthesis. {ECO:0000256|HAMAP-Rule:MF_03175}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Release of N-terminal amino acids, preferentially methionine,
CC from peptides and arylamides.; EC=3.4.11.18;
CC Evidence={ECO:0000256|ARBA:ARBA00000294, ECO:0000256|HAMAP-
CC Rule:MF_03175, ECO:0000256|RuleBase:RU003653};
CC -!- COFACTOR:
CC Name=Co(2+); Xref=ChEBI:CHEBI:48828;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03175};
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03175};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03175};
CC Name=Fe(2+); Xref=ChEBI:CHEBI:29033;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03175};
CC Note=Binds 2 divalent metal cations per subunit. Has a high-affinity
CC and a low affinity metal-binding site. The true nature of the
CC physiological cofactor is under debate. The enzyme is active with
CC cobalt, zinc, manganese or divalent iron ions. Most likely, methionine
CC aminopeptidases function as mononuclear Fe(2+)-metalloproteases under
CC physiological conditions, and the catalytically relevant metal-binding
CC site has been assigned to the histidine-containing high-affinity site.
CC {ECO:0000256|HAMAP-Rule:MF_03175};
CC -!- COFACTOR:
CC Name=Fe(2+); Xref=ChEBI:CHEBI:29033;
CC Evidence={ECO:0000256|ARBA:ARBA00001954};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|ARBA:ARBA00001936};
CC -!- SUBUNIT: Binds EIF2S1 at low magnesium concentrations. Interacts
CC strongly with the eIF-2 gamma-subunit EIF2S3. {ECO:0000256|HAMAP-
CC Rule:MF_03175}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03175}.
CC Note=About 30% of expressed METAP2 associates with polysomes.
CC {ECO:0000256|HAMAP-Rule:MF_03175}.
CC -!- PTM: Contains approximately 12 O-linked N-acetylglucosamine (GlcNAc)
CC residues. O-glycosylation is required for EIF2S1 binding.
CC {ECO:0000256|HAMAP-Rule:MF_03175}.
CC -!- SIMILARITY: Belongs to the peptidase M24A family. Methionine
CC aminopeptidase eukaryotic type 2 subfamily. {ECO:0000256|HAMAP-
CC Rule:MF_03175}.
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DR AlphaFoldDB; H3D560; -.
DR STRING; 99883.ENSTNIP00000015649; -.
DR Ensembl; ENSTNIT00000015856.1; ENSTNIP00000015649.1; ENSTNIG00000012675.1.
DR GeneTree; ENSGT00940000155016; -.
DR HOGENOM; CLU_015857_7_2_1; -.
DR InParanoid; H3D560; -.
DR OMA; ALCIGQN; -.
DR TreeFam; TF300426; -.
DR Proteomes; UP000007303; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004239; F:initiator methionyl aminopeptidase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0070006; F:metalloaminopeptidase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR CDD; cd01088; MetAP2; 1.
DR Gene3D; 3.90.230.10; Creatinase/methionine aminopeptidase superfamily; 1.
DR Gene3D; 1.10.10.10; Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain; 1.
DR HAMAP; MF_03175; MetAP_2_euk; 1.
DR InterPro; IPR036005; Creatinase/aminopeptidase-like.
DR InterPro; IPR000994; Pept_M24.
DR InterPro; IPR001714; Pept_M24_MAP.
DR InterPro; IPR002468; Pept_M24A_MAP2.
DR InterPro; IPR018349; Pept_M24A_MAP2_BS.
DR InterPro; IPR036388; WH-like_DNA-bd_sf.
DR InterPro; IPR036390; WH_DNA-bd_sf.
DR NCBIfam; TIGR00501; met_pdase_II; 1.
DR PANTHER; PTHR45777; METHIONINE AMINOPEPTIDASE 2; 1.
DR PANTHER; PTHR45777:SF2; METHIONINE AMINOPEPTIDASE 2; 1.
DR Pfam; PF00557; Peptidase_M24; 1.
DR PRINTS; PR00599; MAPEPTIDASE.
DR SUPFAM; SSF55920; Creatinase/aminopeptidase; 1.
DR SUPFAM; SSF46785; Winged helix' DNA-binding domain; 1.
DR PROSITE; PS01202; MAP_2; 1.
PE 3: Inferred from homology;
KW Aminopeptidase {ECO:0000256|ARBA:ARBA00022438, ECO:0000256|HAMAP-
KW Rule:MF_03175}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03175};
KW Glycoprotein {ECO:0000256|HAMAP-Rule:MF_03175};
KW Hydrolase {ECO:0000256|HAMAP-Rule:MF_03175};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_03175};
KW Protease {ECO:0000256|ARBA:ARBA00022670, ECO:0000256|HAMAP-Rule:MF_03175};
KW Reference proteome {ECO:0000313|Proteomes:UP000007303}.
FT DOMAIN 153..356
FT /note="Peptidase M24"
FT /evidence="ECO:0000259|Pfam:PF00557"
FT REGION 1..102
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 215
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 235
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 246
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="2"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 246
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 315
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="2"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 323
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 348
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="2"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 443
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
FT BINDING 443
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_label="2"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03175"
SQ SEQUENCE 462 AA; 51531 MW; B09E14EA4A79C63B CRC64;
MADVVTEQVA EQKAVLNGEA EDREETDPVE ETGLRLQFSP QLSPVVNADD AAPEGDADAV
PKVTKQLEKQ VIEEKEEDAE EGADGDDGEN ASAKSQTDPP SVPICELYTS GTYPVGQECE
YPLLQDGRSA VWRMTNEERR ALDRANEEMW NDFRQAAEAH RQVRQHVRSF IKPGLTMIDI
CERLEDCSRK LIKENKLNAG LAFPTGCSLN HCAAHYTPNA GDTTVLQYDD VCKIDFGTHI
NGRIIDCAFT VTFNPKYDKL LEAVREATNT GIKNAGIDVR LCDIGEAIHE VMESYEVELD
GKTYQVKPIR NLNGHSIGQY RIHAGKTVPI VKGGEATRME EGEVYAIETF GSTGKGVVHD
DMECSHYMKN FDVGHVPIRL PRAKHLLNVI NEKFGTLAFC RRWLDRLGES KYLMALKNLC
DLGIVDPYPP LCDSKGCYTA QFEHTILLRP TCKEVVSRGD DY
//
