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promoter |
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promoter 1. Chem a substance added in small amounts to a catalyst to increase its activity 2. Genetics a sequence of nucleotides, associated with a structural gene, that must bind with messenger RNA polymerase before transcription can proceed promoter [prə′mōd·ər] (chemistry) A chemical which itself is a feeble catalyst, but greatly increases the activity of a given catalyst. (genetics) The site on deoxyribonucleic acid to which ribonucleic acid polymerase binds preparatory to initiating transcription of a gene or an operon. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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