Ribonuclease P (RNase P) generates mature tRNA molecules by cleaving their 5' ends. RPM2 is a protein subunit of the yeast mitochondrial RNase P. It has the ability to act as transcriptional activator in the nucleus where it plays a role in defining the steady-state levels of mRNAs for some nucleus-encoded mitochondrial components [2].

1: A 105-kDa protein is required for yeast mitochondrial RNase P activity. Morales MJ, Dang YL, Lou YC, Sulo P, Martin NC; Proc Natl Acad Sci U S A. 1992;89:9875-9879. PMID:1409716

2: Rpm2p, a component of yeast mitochondrial RNase P, acts as a transcriptional activator in the nucleus. Stribinskis V, Heyman HC, Ellis SR, Steffen MC, Martin NC; Mol Cell Biol. 2005;25:6546-6558. PMID:16024791