Attenuation At Biology Glossary

What is it? A mechanism of regulating the level of transcription by interfering with mRNA elongation. Slowed translation through a regulatory region allows formation of a RNA secondary structure that promotes transcription termination. Requires coupled transcription and translation and thus is restricted to prokaryotes. Two examples of genes regulated by attenuation include the trp and his operons in E. coli.

Bio Definition Added By: Julia

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