The function of Ensembl gene identifier ENSG00000172009 (THOP1, thimet oligopeptidase 1) is as follows. Involved in the metabolism of neuropeptides under 20 amino acid residues long. Involved in cytoplasmic peptide degradation (PubMed:17251185, PubMed:7639763). Able to degrade the amyloid-beta precursor protein and generate amyloidogenic fragments (PubMed:17251185, PubMed:7639763). Also acts as a regulator of cannabinoid signaling pathway by mediating degradation of hemopressin, an antagonist peptide of the cannabinoid receptor CNR1 (By similarity). {ECO:0000250|UniProtKB:P24155, ECO:0000269|PubMed:17251185, ECO:0000269|PubMed:7639763}.