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Protein

Methionine aminopeptidase

Gene

map

Organism
Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Removes the N-terminal methionine from nascent proteins. The N-terminal methionine is often cleaved when the second residue in the primary sequence is small and uncharged (Met-Ala-, Cys, Gly, Pro, Ser, Thr, or Val). Requires deformylation of the N(alpha)-formylated initiator methionine before it can be hydrolyzed.UniRule annotation

Catalytic activityi

Release of N-terminal amino acids, preferentially methionine, from peptides and arylamides.UniRule annotation

Cofactori

Co2+UniRule annotation, Zn2+UniRule annotation, Mn2+UniRule annotation, Fe2+UniRule annotationNote: Binds 2 divalent metal cations per subunit. Has a high-affinity and a low affinity metal-binding site. The true nature of the physiological cofactor is under debate. The enzyme is active with cobalt, zinc, manganese or divalent iron ions. Most likely, methionine aminopeptidases function as mononuclear Fe2+-metalloproteases under physiological conditions, and the catalytically relevant metal-binding site has been assigned to the histidine-containing high-affinity site.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei78SubstrateUniRule annotation1
Metal bindingi95Divalent metal cation 1UniRule annotation1
Metal bindingi106Divalent metal cation 1UniRule annotation1
Metal bindingi106Divalent metal cation 2; catalyticUniRule annotation1
Metal bindingi169Divalent metal cation 2; catalytic; via tele nitrogenUniRule annotation1
Binding sitei176SubstrateUniRule annotation1
Metal bindingi206Divalent metal cation 2; catalyticUniRule annotation1
Metal bindingi237Divalent metal cation 1UniRule annotation1
Metal bindingi237Divalent metal cation 2; catalyticUniRule annotation1

GO - Molecular functioni

Keywordsi

Molecular functionAminopeptidase, Hydrolase, Protease
LigandMetal-binding

Enzyme and pathway databases

BioCyciHPY:HP1299-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Methionine aminopeptidaseUniRule annotation (EC:3.4.11.18UniRule annotation)
Short name:
MAPUniRule annotation
Short name:
MetAPUniRule annotation
Alternative name(s):
Peptidase MUniRule annotation
Gene namesi
Name:mapUniRule annotation
Ordered Locus Names:HP_1299
OrganismiHelicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori)
Taxonomic identifieri85962 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter
Proteomesi
  • UP000000429 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001489411 – 253Methionine aminopeptidaseAdd BLAST253

Proteomic databases

PaxDbiP56102
PRIDEiP56102

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

DIPiDIP-3487N
IntActiP56102, 4 interactors
MINTiP56102
STRINGi85962.HP1299

Structurei

3D structure databases

ProteinModelPortaliP56102
SMRiP56102
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase M24A family. Methionine aminopeptidase type 1 subfamily.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105CA1 Bacteria
COG0024 LUCA
KOiK01265
OMAiSYFHGPP

Family and domain databases

CDDicd01086 MetAP1, 1 hit
HAMAPiMF_01974 MetAP_1, 1 hit
InterProiView protein in InterPro
IPR036005 Creatinase/aminopeptidase-like
IPR000994 Pept_M24
IPR001714 Pept_M24_MAP
IPR002467 Pept_M24A_MAP1
PfamiView protein in Pfam
PF00557 Peptidase_M24, 1 hit
PRINTSiPR00599 MAPEPTIDASE
SUPFAMiSSF55920 SSF55920, 1 hit
TIGRFAMsiTIGR00500 met_pdase_I, 1 hit
PROSITEiView protein in PROSITE
PS00680 MAP_1, 1 hit

Sequencei

Sequence statusi: Complete.

P56102-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAISIKSPKE IKALRKAGEL TAQALALLER EVRPGVSLLE LDKMAEDFIK
60 70 80 90 100
SSHARPAFKG LYGFPNSVCM SLNEVVIHGI PTDYVLQEGD IIGLDLGVEV
110 120 130 140 150
DGYYGDSALT LPIGAISPQD EKLLACSKES LMHAINSIRV GMHFKELSQI
160 170 180 190 200
LESTITERGF VPLKGFCGHG IGKKPHEEPE IPNYLEKGVK PNSGPKIKEG
210 220 230 240 250
MVFCLEPMVC QKQGEPKILA DKWSVVSVDG LNTSHHEHTI AIVGNKAVIL

TER
Length:253
Mass (Da):27,577
Last modified:November 1, 1997 - v1
Checksum:iC09772EB85A6A8DA
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE000511 Genomic DNA Translation: AAD08340.1
PIRiC64682
RefSeqiNP_208091.1, NC_000915.1
WP_001018129.1, NC_018939.1

Genome annotation databases

EnsemblBacteriaiAAD08340; AAD08340; HP_1299
GeneIDi898824
KEGGiheo:C694_06710
hpy:HP1299
PATRICifig|85962.47.peg.1393

Similar proteinsi

Entry informationi

Entry nameiMAP1_HELPY
AccessioniPrimary (citable) accession number: P56102
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: November 1, 1997
Last modified: May 23, 2018
This is version 118 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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