LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
DNA transcription, molecular model. Secondary structure of the enzyme RNA polymerase II synthesising a mRNA (messenger ribonucleic acid, lilac) strand from a DNA (deoxyribonucleic acid, red) template. Polymerase II recognises a start sign on the DNA strand and then moves along the strand building the mRNA until it reaches a stop sign. DNA and its protein product.
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