. "Brings about the final exonucleolytic trimming of the 3'-terminus of tRNA precursors in Escherichia coli by a phosphorolysis, producing a mature 3'-terminus in tRNA and nucleoside diphosphate." . "Not identical with EC 2.7.7.8." . . . "RNase PH" . "tRNA nucleotidyltransferase" . "Ribonuclease PH" . "Phosphate-dependent exonuclease" . "tRNA(n+1) + phosphate = tRNA(n) + a nucleoside diphosphate." .