Gene Regulation Prokaryotes Flashcards
1
Q
Beta galactosidase
A
Breaks down lactose
2
Q
Lactose Permease
A
Transports lactose into the cell
3
Q
Lactose Y
A
Encodes for lactose permease
4
Q
Lactose A
A
Encodes Galactoside transacetylase
5
Q
Allolactose
A
Made when lactose is present. Binds to the lac repressor causing a conformational change which makes it unable to bind to the lac operon. This permits transcription of the lac operon
6
Q
As glucose levels decrease, cAMP levels….?
A
Increase
7
Q
Lac Z
A
Encodes for Beta galactosidase
8
Q
Lac I
A
Encodes for lac repressor
9
Q
What modulates the functioning of repressors and activators and how?
A
Small effector molecules. They do so by binding to the allosteric site of the repressor/activator.
