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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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| The mechanism for this age-related vulnerability may be that promotors act on clones of cells that already have been transformed by an initiating (typically genotoxic) carcinogen. Promotors and coupling agents for fillers and reinforcing agents 14. Promotors promise music and voice instruction, but there will also be plenty of activities for those who are more interested in the fantasy element. |
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