Which glycolysis reactions are catalyzed by the following enzymes?
d. Phosphoglycerate mutase

Question

Which glycolysis reactions are catalyzed by the following enzymes?

d. Phosphoglycerate mutase

Accepted Answer

All right. Hello everyone. So this question is asking us what reaction does the enzyme in oasis catalyze in the glycolysis pathway. Option A says the conversion of fructose six phosphate to form fructose 16 bisphosphate. Option B says the conversion of phospho op pyruvate to pyruvate. Option C says the conversion of two phospho glycate to phospho ENYT. And option D says the conversion of dihydroxy acetone phosphate to glyceraldehyde three phosphate. So oftentimes when it comes to the names of enzymes that are important in metabolic pathways, I always recommend to allow the name to guide you as much as possible. So the enzyme enolase implies that an eo is involved whether it's being produced or consumed in the reaction. Now, one specific intermediate of glycolysis that fits the description of an anal is phosphoenolpyruvate or pep for short. So pep is an E email. Now, the question is, is pep being produced or consumed by the enolase enzyme. And the answer is that it's being produced because recall that the enolase enzyme is going to catalyze the second to last step in the glycolysis pathway, which is the conversion of two phospho glycate into or phospho eop pru. Now the formation of this anal which if you recall has a double bond between two carbons is going to involve the loss of water. So essentially the Enola enzyme catalyzes the conversion of two phosphor glycate to phosphoenolpyruvate. This means that our answer is going to be option C in the multiple choice. But just for completion, let's talk about each of the other answer choices and recall which enzymes are relevant for those steps. Starting off here with the conversion of fructose six phosphate to fructose, six phosphate. So for option A and the multiple choice, notice how we're going from fructose with one phosphate group to fructose with two phosphate groups. So that enzyme is called phospho fructose K because you are adding a phosphate group to a phospho fructose. Option B describes the conversion of phosphoenolpyruvate to pyruvate. So what's happening here is that the phosphate group of phosphoenolpyruvate is removed to eventually yield pyruvate. Now, this enzyme is known as pyruvate kinase. The name kinase is a little confusing but recall that in this specific step of the pathway, a phosphate group is transferred from phosphoenolpyruvate to an equivalent of AD P to produce a TP or adenosine triphosphate. Last up, we have the conversion of dihydroxy acetone phosphate to glycerol Hyde three phosphate. Now, at this point, dihydroxyacetone phosphate and glyceraldehyde three phosphate are isomers. One is a ketone, the other is an aldehyde. And so the enzyme that catalyzes the formation of one into the other is a trios phosphate I summarize because this is an isomerization reaction involving two trios phosphates. We have 23 carbon molecules here. So there you have it. Now, once again, this last part was just for the sake of completion. But our answer for this question is option c in the multiple choice. So with that being said, thank you so very much for watching and I hope you found this helpful.

Which glycolysis reactions are catalyzed by the following enzymes?
d. Phosphoglycerate mutase

Verified video answer for a similar problem:

Key Concepts

Glycolysis

Enzymatic Catalysis

Phosphoglycerate Mutase

Which glycolysis reactions are catalyzed by the following enzymes?d. Phosphoglycerate mutase

Verified video answer for a similar problem:

Key Concepts

Glycolysis

Enzymatic Catalysis

Phosphoglycerate Mutase

Which glycolysis reactions are catalyzed by the following enzymes?
d. Phosphoglycerate mutase