EN
The article briefly presents ways of RNA isolation from isotopically labelled bacteria and its subsequent degradation to 13C- and 15N-labelled nucleoside 5'-monophosphates then enzymatically converted to NTPs. 13C- and 15N-labelling of RNA is achieved by in vitro transcription with T7 RNA polymerase using isotopically labelled nucleoside 5'-triphosphates as a substrates and DNA template.