This is the region of the Arabidopsis protein-only RNase P (PRORP) enzyme that consists of up to eleven α-helices. The region serves to enhance the activity of the metallonuclease PROPR domain []. PRORPs are a class of RNA processing enzymes that catalyse maturation of the 5' end of precursor tRNAs in eukaryotes [].
This entry represents a domain found in protein-only RNase P (PRORP), an enzyme that processes precursor tRNAs in human mitochondria and in all tRNA-using compartments of Arabidopsis thaliana. PRORP catalyses the maturation of the 5' ends of tRNA precursors [].
