Control of Gene Expression in Bacteria

Positive control occurs when a regulatory protein

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Unformatted text preview: ification, such as the addition of a phosphate group. Provides the most rapid response of all three mechanisms. Energetically expensive. ♣Changes in gene expression allow bacterial cells to respond to environmental changes. ♣Transcriptional control can be negative or positive. Negative control occurs when a regulatory protein prevents transcription. Positive control occurs when a regulatory protein increases the transcription rate. Negative Control: when a regulatory protein binds to DNA and shuts down transcription Positive Control: when a regulatory protein binds to DNA and triggers transcription Inducer: a...
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This note was uploaded on 02/13/2014 for the course BIO 103 taught by Professor Heidielmendorf during the Fall '10 term at Georgetown.

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