Retrieving "Transfer Rnas (trnas)" from the archives

Cross-reference notes under review

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1. Active Transcription

   Linked via "transfer RNAs (tRNAs)"

   RNA Polymerase I (Pol I)/): Primarily transcribes ribosomal RNA (rRNA) genes-genes/), essential for ribosome biogenesis. Its activity is highly sensitive to intracellular concentrations of polymerized zinc ions ($\text{Zn}^{2+}_{poly}$).
   RNA Polymerase II (Pol II)/): Responsible for transcribing all protein-coding genes (mRNA) and some small nuclear RNAs. [Pol II](/entries/…