a tRNA precursor + 2 CTP + ATP = a tRNA with a 3' CCA end + 3 diphosphate
a trna precursor + 2 ctp + atp = a trna with a 3' cca end + 3 diphosphate
a tRNA precursor + 2 CTP + ATP = a tRNA with a 3' CCA end + 3 diphosphate
a trna precursor + 2 ctp + atp = a trna with a 3' cca end + 3 diphosphate