26 Oct 07

26 Oct 07 - Sigma identifies the 10 and 35 promoter sites....

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Sigma identifies the –10 and –35 promoter sites. It properly orients the core complex for transcription at the transcriptional start site. The DNA double helix is unwound, and transcription begins.
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Which RNA polymerase is responsible for transcription of protein-coding genes? A. Pol I B. Pol II C. Pol III D. Pol Prot
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The DNA double helix is unwound, and transcription begins. Multiple sigma proteins, each prefers to bind to a particular DNA sequence, allows for certain genes to be on or off
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Sigma dissociates from the core enzyme once the initiation phase of transcription is completed.
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Elongation and Termination During the elongation phase , RNA polymerase moves along the DNA template in the 3' 5' direction and synthesizes RNA in the 5' 3' direction .
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Transcription ends with a termination phase . RNA polymerase encounters a transcription termination signal . this causes the RNA to form a
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26 Oct 07 - Sigma identifies the 10 and 35 promoter sites....

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