3.1.27.7 tRNA precursors + H2O - Escherichia coli 3'-phosphooligonucleotides - ? 93176 3.1.27.7 tRNA precursors + H2O cleavage within a possible stem-loop at the border between ds and ss regions Escherichia coli 3'-phosphooligonucleotides - ? 93176 3.1.27.7 tRNA precursors + H2O cleavage near the 3'-end of tRNAs Escherichia coli 3'-phosphooligonucleotides - ? 93176 3.1.27.7 tRNA precursors + H2O preferential cleavage between a cytosine and an adenine moiety Escherichia coli 3'-phosphooligonucleotides - ? 93176