58 580
Assignments Done
Successfully Done
In March 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Molecular Biology Question for Sanjukta Ghosh

Question #64334
Is sigma factor a transcription factor?
After I googled 'sigma TF' I stumbled upon two papers(only).
From a paper:
Sigma factors (sigmas) are bacterial transcription factors that bind core RNA polymerase (RNAP) and direct transcription initiation at cognate promoter sites.
and another paper had the title -
Specific binding of the transcription factor sigma-54 to promoter DNA.
However this contradicts with my book- Principle of Genetics Snustard and Simmons:
'Unlike their prokaryotic counterparts, eukaryotic RNAPs cannot initiate transcription by themselves ....require the assistance of protein transcription factors to start synthesis.'
What's your opinion?
Expert's answer

Not answered

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question