Asynchronous basepair openings in transcription initiation: CRP enhances the rate-limiting step
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Asynchronous basepair openings in transcription initiation: CRP enhances the rate-limiting step.
The mechanism of isomerization (basepair openings) during transcription initiation by RNA polymerase at the galP1 promoter of Escherichia coli was investigated by 2-aminopurine (2,AP) fluorescence. The fluorescence of 2,AP is quenched in DNA duplex and enhanced when the basepair is distorted or deformed. The increase of 2,AP fluorescence was used to monitor basepair distortion at several indivi...
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ژورنال
عنوان ژورنال: The EMBO Journal
سال: 2004
ISSN: 0261-4189,1460-2075
DOI: 10.1038/sj.emboj.7600098