UniProt functional annotation for P04825

UniProt code: P04825.

Organism: Escherichia coli (strain K12).
Taxonomy: Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales; Enterobacteriaceae; Escherichia.
 
Function: Aminopeptidase N is involved in the degradation of intracellular peptides generated by protein breakdown during normal growth as well as in response to nutrient starvation. {ECO:0000269|PubMed:16885166, ECO:0000269|PubMed:18416562, ECO:0000269|PubMed:19622865, ECO:0000305|PubMed:20067529}.
 
Catalytic activity: Reaction=Release of an N-terminal amino acid, Xaa-|-Yaa- from a peptide, amide or arylamide. Xaa is preferably Ala, but may be most amino acids including Pro (slow action). When a terminal hydrophobic residue is followed by a prolyl residue, the two may be released as an intact Xaa-Pro dipeptide.; EC=3.4.11.2; Evidence={ECO:0000269|PubMed:16885166, ECO:0000269|PubMed:18416562, ECO:0000269|PubMed:19622865};
Cofactor: Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000269|PubMed:16885166, ECO:0000269|PubMed:18416562, ECO:0000269|PubMed:19622865}; Note=Binds 1 zinc ion per subunit. {ECO:0000269|PubMed:16885166, ECO:0000269|PubMed:18416562, ECO:0000269|PubMed:19622865};
Subcellular location: Cell inner membrane; Peripheral membrane protein; Cytoplasmic side.
Disruption phenotype: A quadruple peptidase disruption (pepA, pepB, pepD and pepN) does not grow in M9 minimal medium, does grow better when supplemented with casamino acids (PubMed:20067529). {ECO:0000269|PubMed:20067529}.
Similarity: Belongs to the peptidase M1 family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.