LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
RNA polymerase II elongation complex. Computer model showing yeast RNA polymerase complexed with DNA (pink) and RNA (light blue). This enzyme synthesises a complementary mRNA (messenger ribonucleic acid) strand from a strand of DNA (deoxyribonucleic acid) during a DNA transcription. The RNA polymerase molecule uses the original DNA strand as a template for the mRNA.
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