Tags: Enzyme.
RNA polymerase (RNAP or RNApol) also known as DNA-dependent RNA polymerase is an enzyme that produces primary transcript RNA. In cells RNAP is necessary for constructing RNA chains using DNA genes as templates a process called transcription. RNA polymerase enzymes are essential to life and are found in all organisms and many viruses. In chemical terms RNAP is a nucleotidyl transferase that polymerizes ribonucleotides at the 3′ end of an RNA transcript.
