LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP...
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Transcript of LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP...
![Page 1: LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP complex B-galactosidase lactose permease transcetylase operator.](https://reader036.fdocuments.in/reader036/viewer/2022082610/56649d195503460f949ee89a/html5/thumbnails/1.jpg)
lacZ lacY lacAOAi
Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP
complex CAP complex
B-galactosidase
lactose permease
transcetylase
operatoractivatorRegulatory gene
P
lacZ lacY lacAOAi
NO transcription
lacZ lacY lacAOAi
NO transcription
lacZ lacY lacAOAi
Transcription occurs
lacZ lacY lacAOAi
Lac operon
![Page 2: LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP complex B-galactosidase lactose permease transcetylase operator.](https://reader036.fdocuments.in/reader036/viewer/2022082610/56649d195503460f949ee89a/html5/thumbnails/2.jpg)
Not taken up
Lots of glucose
Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP
complex CAP complex
IIC
glycolysis
Glucose
PEP
Pyruvate
Kreb’s
IIB
HPr
IIA
EI ATP
glucose
glucose
lactose
Low cAMP
![Page 3: LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP complex B-galactosidase lactose permease transcetylase operator.](https://reader036.fdocuments.in/reader036/viewer/2022082610/56649d195503460f949ee89a/html5/thumbnails/3.jpg)
Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP
complex CAP complex
IIC
glycolysis
Glucose
PEP
Pyruvate
Kreb’s
HPr
IIA
EI ATP
IIB
lactose
Adenylate cyclase
Not more glucose
This process slows down
Levels of cAMP increase
![Page 4: LacZ lacY lacA OA i Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP complex CAP complex B-galactosidase lactose permease transcetylase operator.](https://reader036.fdocuments.in/reader036/viewer/2022082610/56649d195503460f949ee89a/html5/thumbnails/4.jpg)
Repressor lactose lactose/repressor RNA pol CRP cAMP CRP/cAMP
complex CAP complex
IIC
glycolysis
Glucose
PEP
Pyruvate
Kreb’s
HPr
IIA
EI ATP
IIB
lactose
Adenylate cyclase
Not more glucose
This process slows down
lacOp becomes active