General Transcription Factors

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1
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What factor do bacterial RNA polymerases require to recognise promoters

A sigma factor

2
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Do eukaryotes use sigma factors

No

3
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How do eukaryotes achieve promoter recognition

Using RNA polymerase-specific multi-component general transcription factors

4
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What do general transcription factors form on the promoter

A pre-initiation complex

5
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What is the role of general transcription factors

Recruit RNA polymerase II and direct transcription initiation