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Protein

Methionine aminopeptidase

Gene

map

Organism
Staphylococcus aureus (strain Mu50 / ATCC 700699)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

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 annotation1 Publication, 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 annotation1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei76SubstrateUniRule annotation1 Publication1
Metal bindingi93Divalent metal cation 1UniRule annotation1 Publication1
Metal bindingi104Divalent metal cation 1UniRule annotation1 Publication1
Metal bindingi104Divalent metal cation 2; catalyticUniRule annotation1 Publication1
Metal bindingi168Divalent metal cation 2; catalytic; via tele nitrogenUniRule annotation1 Publication1
Binding sitei175SubstrateUniRule annotation1 Publication1
Metal bindingi202Divalent metal cation 2; catalyticUniRule annotation1 Publication1
Metal bindingi233Divalent metal cation 1UniRule annotation1 Publication1
Metal bindingi233Divalent metal cation 2; catalyticUniRule annotation1 Publication1

GO - Molecular functioni

Keywordsi

Molecular functionAminopeptidase, Hydrolase, Protease
LigandMetal-binding

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:SAV1888
OrganismiStaphylococcus aureus (strain Mu50 / ATCC 700699)
Taxonomic identifieri158878 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesStaphylococcaceaeStaphylococcus
Proteomesi
  • UP000002481 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001489551 – 252Methionine aminopeptidaseAdd BLAST252

Proteomic databases

PaxDbiP0A078
PRIDEiP0A078

2D gel databases

World-2DPAGEi0002:P0A078

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi158878.SAV1888

Structurei

Secondary structure

1252
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi6 – 29Combined sources24
Helixi36 – 50Combined sources15
Helixi55 – 60Combined sources6
Beta strandi63 – 70Combined sources8
Beta strandi73 – 75Combined sources3
Beta strandi89 – 98Combined sources10
Beta strandi101 – 110Combined sources10
Helixi118 – 134Combined sources17
Helixi144 – 156Combined sources13
Beta strandi167 – 169Combined sources3
Beta strandi171 – 181Combined sources11
Beta strandi197 – 201Combined sources5
Beta strandi204 – 208Combined sources5
Beta strandi216 – 219Combined sources4
Beta strandi229 – 237Combined sources9

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1QXWX-ray1.67A1-252[»]
1QXYX-ray1.04A1-252[»]
1QXZX-ray1.68A1-252[»]
ProteinModelPortaliP0A078
SMRiP0A078
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP0A078

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiENOG4105CA1 Bacteria
COG0024 LUCA
HOGENOMiHOG000030426
KOiK01265
OMAiESMWAGI
PhylomeDBiP0A078

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

Sequencei

Sequence statusi: Complete.

P0A078-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MIVKTEEELQ ALKEIGYICA KVRNTMQAAT KPGITTKELD NIAKELFEEY
60 70 80 90 100
GAISAPIHDE NFPGQTCISV NEEVAHGIPS KRVIREGDLV NIDVSALKNG
110 120 130 140 150
YYADTGISFV VGESDDPMKQ KVCDVATMAF ENAIAKVKPG TKLSNIGKAV
160 170 180 190 200
HNTARQNDLK VIKNLTGHGV GLSLHEAPAH VLNYFDPKDK TLLTEGMVLA
210 220 230 240 250
IEPFISSNAS FVTEGKNEWA FETSDKSFVA QIEHTVIVTK DGPILTTKIE

EE
Length:252
Mass (Da):27,502
Last modified:March 1, 2005 - v1
Checksum:i3E42E623286B537B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000017 Genomic DNA Translation: BAB58050.1
RefSeqiWP_000636142.1, NC_002758.2

Genome annotation databases

EnsemblBacteriaiBAB58050; BAB58050; SAV1888
KEGGisav:SAV1888

Similar proteinsi

Entry informationi

Entry nameiMAP1_STAAM
AccessioniPrimary (citable) accession number: P0A078
Secondary accession number(s): Q9KWL1
Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 1, 2005
Last sequence update: March 1, 2005
Last modified: March 28, 2018
This is version 100 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

3D-structure, Complete proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. Peptidase families
    Classification of peptidase families and list of entries
  3. SIMILARITY comments
    Index of protein domains and families
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Main funding by: National Institutes of Health