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You are able to halt a molecule of RNA polymerase when it’s nearly finished transcribing a...

You are able to halt a molecule of RNA polymerase when it’s nearly finished transcribing a gene. How many distinct proteins make up this particular RNA polymerase enzyme and what are they called?

Please explain how you know the RNA polymerase type

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Answer #1

All three of the nuclear RNA polymerases are complex enzymes, consisting of 8 to 14 different subunits each. Although they recognize different promoters and transcribe distinct classes of genes, they share several common features.

All eukaryotes have three different RNA polymerases (RNAPs) which transcribe different types of genes. RNA polymerase I transcribes rRNA genes, RNA polymerase II transcribes mRNA, miRNA, snRNA, and snoRNA genes, and RNA polymerase III transcribes tRNA and 5S rRNA genes.

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