Molecular image of the hammerhead ribozyme (in blue) bound to RNA (in orange). Ribozymes are catalytic RNA molecules that may have been the first carriers of genetic information. (K. Eward/Biografx/Photo Researchers.)

• RNA in the Primeval World

• RNA Molecules

The Structure of RNA Classes of RNA

• Transcription: Synthesizing RNA from a DNA Template

The Template

The Substrate for Transcription The Transcription Apparatus

• The Process of Bacterial Transcription




• The Process of Eukaryotic Transcription

Transcription and Nucleosome Structure

Transcription Initiation RNA Polymerase II Promoters RNA Polymerase I Promoters RNA Polymerase III Promoters Evolutionary Relationships and the TATA-Binding Protein Termination

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