Allosteric Control – Metabolic Control of Enzyme Activity
About the Lecture
The lecture Allosteric Control – Metabolic Control of Enzyme Activity by Kevin Ahern, PhD is from the course Metabolic Control.
Included Quiz Questions
Which is true of allosteric control?
- It involves the binding of a small molecule to the enzyme.
- It acts to positively regulate enzymes, but not negatively.
- It involves the addition or removal of phosphates.
- It is basically an on/off switch.
Which is true of aspartate transcarbamoylase?
- it is activated by aspartate.
- It is allosterically regulated by its substrate, CTP.
- It is feedback inhibited by ATP.
- It is activated by CTP.
Aspartate transcarbamoylase does which of the following?
- Flips into the T state when CTP binds to the regulatory site.
- Flips into the R state when ATP binds to the catalytic site.
- Flips into the T state when aspartate binds to the regulatory site.
- Flips into the T state when CTP binds into the catalytic site.
Feedback inhibition occurs when which of these happens?
- An end product of a pathway inhibits the first enzyme of the pathway.
- A substrate inhibits an enzyme from catalyzing a reaction.
- A regulator binds to a catalytic site of an enzyme.
- The first product of a pathway inhibits the last enzyme of the pathway.
Which of the following do not control the activities of the ATCase enzyme?
- GTP
- TTP
- ATP
- CTP
- Aspartate
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Author of lecture Allosteric Control – Metabolic Control of Enzyme Activity
Kevin Ahern, PhD
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I liked the way the R and T states where explained. It all became very clear
A great, insightful lecturer. A Prof. at the top of his game. Miss his long hair though (checkout his youtube site)!
