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'''NtrC''' (Nitrogen regulatory protein C) is the name of the protein necessary for the prokaryotic regulation [[transcription factor]] sigma N (sigma 54) to form an open complex with [[RNA polymerase]] in order to activate glnA transcription. The open -> closed [[conformational change]] of the sigma N-RNA polymerase complex around the [[glutamine synthetase]] gene promoter requires ATP and involves the formation of a loop between the enhancer and the promoter regions. The NtrC proteins bind at two sites located -140 and -108 upstream from the point of [[Transcription (genetics)|gene transcription]]. |
'''NtrC''' (Nitrogen regulatory protein C) is the name of the protein necessary for the prokaryotic regulation [[transcription factor]] sigma N (sigma 54) to form an open complex with [[RNA polymerase]] in order to activate glnA transcription. The open -> closed [[conformational change]] of the sigma N-RNA polymerase complex around the [[glutamine synthetase]] gene promoter requires ATP and involves the formation of a loop between the enhancer and the promoter regions. The NtrC proteins bind at two sites located -140 and -108 upstream from the point of [[Transcription (genetics)|gene transcription]]. |
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Revision as of 03:56, 9 January 2013
NtrC (Nitrogen regulatory protein C) is the name of the protein necessary for the prokaryotic regulation transcription factor sigma N (sigma 54) to form an open complex with RNA polymerase in order to activate glnA transcription. The open -> closed conformational change of the sigma N-RNA polymerase complex around the glutamine synthetase gene promoter requires ATP and involves the formation of a loop between the enhancer and the promoter regions. The NtrC proteins bind at two sites located -140 and -108 upstream from the point of gene transcription.
References
- Lecture notes, Molecular Genetics 3 at Edinburgh University autumn 2006