2.7.7.56	tRNA nucleotidyltransferase	tRNA processing	-	-	
3.1.13.1	exoribonuclease II	tRNA processing	-	-	
3.1.13.5	ribonuclease D	tRNA processing	-	-	
3.1.26.5	ribonuclease P	tRNA processing	-	-	
3.1.26.12	ribonuclease E	tRNA processing	-	-