Entrez Summary: This gene encodes a zinc metalloaminopeptidase of the M1 protease family that resides in the endoplasmic reticulum and functions in N-terminal trimming antigenic epitopes for presentation by major histocompatibility complex (MHC) class I molecules. Certain mutations in this gene are associated with the inflammatory arthritis syndrome ankylosing spondylitis and pre-eclampsia. This gene is located adjacent to a closely related aminopeptidase gene on chromosome 5. [provided by RefSeq, Jul 2016].
UniProt Summary: Aminopeptidase that plays a central role in peptide trimming, a step required for the generation of most HLA class I- binding peptides. Peptide trimming is essential to customize longer precursor peptides to fit them to the correct length required for presentation on MHC class I molecules. Preferentially hydrolyzes the basic residues Arg and Lys. {ECO:0000269|PubMed:12799365, ECO:0000269|PubMed:15908954, ECO:0000269|PubMed:16286653}.
Pfam DomainsGO Terms
Pfam Domains
Peptidase M1
GO Terms
antigen processing and presentation of endogenous peptide antigen
antigen processing and presentation of endogenous peptide antigen via MHC class I
antigen processing and presentation of endogenous antigen
metalloaminopeptidase activity
aminopeptidase activity
peptide catabolic process
peptide binding
metallopeptidase activity
antigen processing and presentation of peptide antigen via MHC class I
regulation of blood pressure
antigen processing and presentation of peptide antigen
antigen processing and presentation
endoplasmic reticulum lumen
blood circulation
circulatory system process
peptide metabolic process
adaptive immune response
cellular amide metabolic process
zinc ion binding
endoplasmic reticulum membrane
organonitrogen compound catabolic process
proteolysis
organic substance catabolic process
cellular catabolic process
immune response
system process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)