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Transcription and Regulation

Transcription and Regulation
Enhancers are regions that

are CAT box binding proteins
bind RNA polymerase
are adjacent to the TATA box
modulate transcription

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Transcription and Regulation
The closed complex at bacterial promoters is

bound more tightly when repressors are present
in equilibrium with free RNA polymerase and the promoter
not affected by activator proteins
not affected by promoter mutations

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Transcription and Regulation
Upstream regions which are essential for correct transcription are called

transcription factors
start codons
promoters
enhancers

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Transcription and Regulation
Immediately after transcription

both (a) and (b)
a methylated guanine cap is added to the 31 end of the transcript
a poly adenylation signal is added
a methylated guanine cap is added to the 51 end of the transcript

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Transcription and Regulation
In prokaryotes, transcription is

terminated by a protein called rho
terminated by a start codon
terminated by a poly A sequence
terminated by the stop codon

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Transcription and Regulation
Transcription factors are

promoters
TATA boxes
proteins which bind to DNA and regulate transcription
CATT boxes

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