Question

Give one example for each of the following classes of enzymes and the complete reaction they...

Give one example for each of the following classes of enzymes and the complete reaction they catalyze from Glycolysis , Gluconeogenesis or Pentose phosphate pathway.

(i) Oxidoreductase

(ii) Lyase

(iii) Isomerase

(iv) Transferase

(v) Ligase

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Homework Answers

Answer #1

(i)        Oxidoreductase

Example - Glyceraldehyde-3-phosphate dehydrogenase

Glyceraldehyde-3phosphate + NAD+ + Pi 1,3-Bisphosphoglycerate + NADH + H+

(ii)       Lyase

Example - Aldolase

Fructose - 1,6 - biphosphate Dihydroxyacetone phosphate + Gyceraldehyde-3-phosphate

(iii)      Isomerase

Example - Triosephosphate isomerase

Dihydroxyacetone phosphate Gyceraldehyde-3-phosphate

(iv)      Transferase

Example - Transketolase

Ribose -5- phosphate + Xylulose -5- Phosphate Gyceraldehyde-3-phosphate + Sedoheptulose -7- phosphate

(v)       Ligase

Example - Pyruvate caroxylase

Pyruvate + ATP   Oxaloacetate + ADP + Pi

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