The protein that you have purified in your biochemistry lab seems to "change" D-glucose, but not L-glucose, to glucose-6-phosphate. You suppose it is one of the hexokinase isoforms. Which property of the enzyme is responsible for the result you have just seen?

Question

Quizplus · Accepted Answer

The property responsible for the observed result is substrate specificity, as the enzyme only appears to affect the D-glucose isomer and not the L-glucose isomer. This suggests that the enzyme is selective for specific stereoisomeric forms of glucose, rather than being inhibited by another molecule or affected by temperature or the presence of a cofactor.

The Protein That You Have Purified in Your Biochemistry Lab