The function of POP5 (POP5 ribonuclease P/MRP subunit, ENSG00000167272) is as follows. Component of ribonuclease P, a protein complex that generates mature tRNA molecules by cleaving their 5'-ends (PubMed:11413139, PubMed:30454648). Also a component of the MRP ribonuclease complex, which cleaves pre-rRNA sequences (PubMed:28115465). {ECO:0000269|PubMed:11413139, ECO:0000269|PubMed:28115465, ECO:0000269|PubMed:30454648}.