Give the class number of the enzyme that does each job…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Give the class number of the enzyme that does each job. (a) Removes hydrogen from a substrate. (b) Moves a phosphate group to another molecule. (c) Splits a bond by adding water. (d) Removes a group and leaves a double bond. (e) Rearranges the atoms inside a molecule. (f) Joins two molecules using ATP.
Need a reminder? The key ideaShow
Six classes: oxidoreductases (hydrogen, oxidation and reduction), transferases (another group), hydrolases (water), lyases (other breaking, double bond left), isomerases (rearranging), ligases (joining, with ATP). Apoenzyme + cofactor = holoenzyme. Cofactors: prosthetic group (tight, haem), coenzyme (loose, NAD from niacin), metal ion (zinc).
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
Step 1. Match each job to a class. (a) Oxidoreductase, class . (b) Transferase, class . (c) Hydrolase, class . (d) Lyase, class . (e) Isomerase, class . (f) Ligase, class .
Answer: (a) , (b) , (c) , (d) , (e) , (f) .
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