Endonuclease RNase P responsible for the 5' maturation of tRNA precursors (PubMed:22549728, PubMed:26655022). Preferentially binds precursor tRNAs containing short 5' leaders and 3' trailers (PubMed:26655022). Also involved in the maturation of mRNA and small nucleolar RNA (snoRNA) (PubMed:22549728). Endonucleolytic cleavage of RNA, removing 5'-extranucleotides from tRNA precursor. Binds 2 Mg(2+) ions per subunit. Monomer; forms dimers in crystallo but monomers in solution (PubMed:26655022). No visible phenotype; due to the redundancy with PRORP3. Prorp2 and prorp3 double mutant is lethal. Belongs to the PPR family. P subfamily.