Question

when the polymerase reaches the Terminator the nascent RNA and enzyme are released by which polypeptide molecule?​

Answer 1

when the polymerase reaches the Terminator the nascent RNA and enzyme are released by the rho-factor.

Answer 2

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Cellular RNA polymerases are multisubunit enzymes. Bacteria and Archaea each have a single RNA polymerase, while the eukaryotic nucleus contains three such enzymes: RNA polymerase I (RNAP I), RNA polymerase II (RNAP II), and RNA polymerase III (RNAP III). While there are profound differences between these multisubunit RNA polymerases, there are also significant similarities. Indeed, it is clear that these enzymes are all related and form a family. All members of this family have three different subunits, which are evolutionarily conserved to a greater or lesser extent. Bacterial RNA polymerase and the closely related chloroplast RNA polymerase contain only these conserved subunits. The Archaea, like the Bacteria, have only a single RNA polymerase, but it is more complex than the bacterial enzyme and is more closely related to the eukaryotic RNA polymerase II. However, even in the complex eukaryotic RNA polymerases, conserved sequences make up over 50% of the enzyme mass, and therefore the simpler bacterial enzymes have provided an important model for RNA polymerase structure and function. This has been confirmed by structural analysis of the purified enzymes.

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