Q9ZJT0 (AMPM_HELPJ) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Methionine aminopeptidase
Short name=MAP
EC=3.4.11.18

Alternative name(s):
Peptidase M

Gene names

Name:	map
Ordered Locus Names:	jhp_1219

Organism

Helicobacter pylori (strain J99) (Campylobacter pylori J99) [Complete proteome] [HAMAP]

Taxonomic identifier

85963 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Epsilonproteobacteria › Campylobacterales › Helicobacteraceae › Helicobacter

Protein attributes

Sequence length	253 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Removes the amino-terminal methionine from nascent proteins By similarity.
Catalytic activity	Release of N-terminal amino acids, preferentially methionine, from peptides and arylamides.
Cofactor	Binds 2 cobalt ions per subunit. The true nature of the physiological cofactor is under debate. The enzyme is also active with zinc, manganese or divalent iron ions By similarity.
Subunit structure	Monomer By similarity.
Sequence similarities	Belongs to the peptidase M24A family.

Ontologies

Keywords
Ligand	Cobalt Metal-binding
Molecular function	Aminopeptidase Hydrolase Protease
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	cellular process Inferred from electronic annotation. Source: InterPro proteolysis Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	aminopeptidase activity Inferred from electronic annotation. Source: UniProtKB-KW metal ion binding Inferred from electronic annotation. Source: UniProtKB-KW metalloexopeptidase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 253	253	Methionine aminopeptidase		PRO_0000148942
Sites
	Metal binding	95	1	Cobalt 1 By similarity
	Metal binding	106	1	Cobalt 1 By similarity
	Metal binding	106	1	Cobalt 2 By similarity
	Metal binding	169	1	Cobalt 2 By similarity
	Metal binding	206	1	Cobalt 2 By similarity
	Metal binding	237	1	Cobalt 1 By similarity
	Metal binding	237	1	Cobalt 2 By similarity
	Binding site	78	1	Substrate By similarity
	Binding site	176	1	Substrate By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q9ZJT0 [UniParc]. Last modified May 1, 1999. Version 1. Checksum: D588885F32C34150	FASTA	253	27,464
	10 20 30 40 50 60 MAISIKSPKE IKALRKAGEL TAQALALLER EVRPGVSLLE LDKMAEDFIK SSHARPAFKG 70 80 90 100 110 120 LYGFPNSVCM SLNEVVIHGI PTDYVLQEGD IIGLDLGVEV DGYYGDSALT LPIGAISPQD 130 140 150 160 170 180 EKLLACSKES LMHAISSIRV GMHFKELSQI LEGAITERGF VPLKGFCGHG IGKKPHEEPE 190 200 210 220 230 240 IPNYLEKGVK ANSGPKIKEG MVFCLEPMVC QKQGEPKILA DKWSVVSVDG LNTSHHEHTI 250 AIVGNKAVIL TER

References

[1]

"Genomic sequence comparison of two unrelated isolates of the human gastric pathogen Helicobacter pylori." Alm R.A., Ling L.-S.L., Moir D.T., King B.L., Brown E.D., Doig P.C., Smith D.R., Noonan B., Guild B.C., deJonge B.L., Carmel G., Tummino P.J., Caruso A., Uria-Nickelsen M., Mills D.M., Ives C., Gibson R., Merberg D. , Mills S.D., Jiang Q., Taylor D.E., Vovis G.F., Trust T.J. Nature 397:176-180(1999) [PubMed: 9923682] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: J99.

+

Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE001439 Genomic DNA. Translation: AAD06803.1.
PIR	C71833.
RefSeq	NP_223937.1. NC_000921.1.
3D structure databases
ProteinModelPortal	Q9ZJT0.
ModBase	Search...
Protein-protein interaction databases
STRING	Q9ZJT0.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	889835.
GenomeReviews	Gene locus jhp_1219 in contig AE001439_GR.
KEGG	hpj:jhp1219.
NMPDR	fig|85963.1.peg.1215.
PATRIC	20607280. VBIHelPyl98156_1321.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0024.
HOGENOM	HBG299384.
OMA	CEILTDR.
PhylomeDB	Q9ZJT0.
ProtClustDB	PRK05716.
Enzyme and pathway databases
BioCyc	HPYL85963:JHP1219-MONOMER.
Family and domain databases
InterPro	IPR001714. Pept_M24_MAP. IPR000994. Pept_M24_structural-domain. IPR002467. Pept_M24A_MAP1. [Graphical view]
Gene3D	G3DSA:3.90.230.10. Peptidase_M24_cat_core. 1 hit.
KO	K01265.
Pfam	PF00557. Peptidase_M24. 1 hit. [Graphical view]
PRINTS	PR00599. MAPEPTIDASE.
SUPFAM	SSF55920. Peptidase_M24_cat_core. 1 hit.
TIGRFAMs	TIGR00500. Met_pdase_I. 1 hit.
PROSITE	PS00680. MAP_1. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

AMPM_HELPJ

Accession

Primary (citable) accession number: Q9ZJT0

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 1, 2000
Last sequence update:	May 1, 1999
Last modified:	January 25, 2012
This is version 81 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program