Allosteric Control – Metabolic Control of Enzyme Activity
Über den Vortrag
Der Vortrag „Allosteric Control – Metabolic Control of Enzyme Activity“ von Kevin Ahern, PhD ist Bestandteil des Kurses „Biochemie für Mediziner*innen“.
Quiz zum Vortrag
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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Dozent des Vortrages Allosteric Control – Metabolic Control of Enzyme Activity
Kevin Ahern, PhD
Dr. Kevin Ahern is a Professor in the Department of Biochemistry and Biophysics at Oregon State University (OSU), USA.
He obtained his PhD in Biochemistry from Oregon State University. Currently, he teaches courses for health sciences students at OSU.
He is co-author of three Open Educational electronic textbooks on Biochemistry and a Guide to Getting Into Medical School.
Due to his achievements, he earned OSU’s highest teaching recognition, the Elizabeth P. Ritchie Distinguished Professor Award in 2017.
Within Lecturio, Dr. Ahern teaches courses on Biochemistry and on "How to Get into Medical School”.
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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)!
