Part of a metabolic pathway used to produce the amino acid isoleucine is shown - Scottish Highers Human Biology - Question 6 - 2023
Question 6
Part of a metabolic pathway used to produce the amino acid isoleucine is shown.
threonine deaminase
threonine --------... show full transcript
Worked Solution & Example Answer:Part of a metabolic pathway used to produce the amino acid isoleucine is shown - Scottish Highers Human Biology - Question 6 - 2023
Step 1
1. Isoleucine binds to threonine deaminase.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is correct. Isoleucine acts as a feedback inhibitor, meaning it binds to threonine deaminase to regulate the pathway.
Step 2
2. Threonine deaminase lowers the activation energy required to convert threonine into ketobutyrate.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is correct. Enzymes, like threonine deaminase, facilitate biochemical reactions by lowering the activation energy.
Step 3
3. Ketobutyrate is the substrate of isoleucine.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect. Ketobutyrate is an intermediate in the pathway to producing isoleucine, but it is not the substrate of isoleucine itself.
Join the Scottish Highers students using SimpleStudy...
