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375110
CAP and cAMP
Description
(Biology Exam 3) Mind Map on CAP and cAMP, created by izzy5605 on 20/11/2013.
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biology exam 3
biology exam 3
Mind Map by
izzy5605
, updated more than 1 year ago
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Created by
izzy5605
over 10 years ago
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Resource summary
CAP and cAMP
CAP
Sequence specific DNA binding protein
cyclic adenosine monophosphate
stabilizes the polymerase with the help of cAMP
cAMP
CAP only binds the DNA when its bound to cAMP
helps to stabilize the RNAP on the promoter of DNA
when glucose levels are high cAMP levels are low
dont need to stabilize the polymerase for transcription if have glucose already
level examples
low glucose, low lactose
cAMP high and stabilizes polymerase, repressor bound so little transcription
low glucose, high lactose
cAMP high, high transcription
high glucose, high lactose
cAMP low, RNAP not stabilized, transcription occurs at a low level
high glucose, low lactose
low cAMP, RNAP not stabilized, repressor, not much transcription
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