Question

Which of the following is involved in transcription of tRNA 5sr RNA and sn RNA of eukaryotes

Answer 1

Since the options are not given, I am giving a general answer.

The correct answer could be - RNA Pol III enzyme.

RNA is synthesized by three important polymerases in eukaryotes - RNA Pol I, RNA Pol II, and RNA Pol III.

RNA Pol III is a nucleoplasmic enzyme. It plays a role in the transcription of the tRNA, of the 5s RNA, of the U6 snRNA, and also the 7s RNA of the SRP or the signal recognition particle.

Answer 2

Transcription in eukaryotic cells is considerably more complex than in bacteria. Eukaryotic cells contain three distinct nuclear RNA polymerases which transcribe different classes of genes.

RNA polymerase II transcribes protein-coding genes to yield mRNAs.

RNA polymerases I and III transcribe ribosomal RNAs  (rRNAs) and transfer RNAs (tRNAs).

RNA polymerase I transcribes three largest species of rRNAs which are designated 28S, 18S and 5.8S.

RNA polymerase III transcribes the genes for tRNAs and for the smallest species of ribosomal RNA (5S rRNA)

RNA polymerase III also transcribes some of the small RNAs involved in splicing and protein transport (snRNAs and scRNAs).