In RNA polymerase-directed transcription, during elongation, aspa...

10. Transcription

Transcription in Prokaryotes

10. Transcription

ANSWERS OPTIONS

The first Mg²⁺ ion bonds with the pyrophosphate of NTP whereas the second Mg²⁺ bonds with the α-phosphate of NTP.

The first Mg²⁺ ion bonds with α-phosphate of NTP whereas the second Mg²⁺ bonds with pyrophosphate of NTP.

Mg²⁺ ions aren't involved in the elongation process.

None of these.

In RNA polymerase-directed transcription, during elongation, aspartyl residues (asp)along with Mg2+ ions coordinate the phosphates of the ribonucleotides. The overall reaction is (NMP)n +NTP → (NMP)n+1 +PPi. Which of the following is correct about the first and second Mg2+ ions?