Hexokinase vs Glucokinase Flashcards Preview

[Topnotch Biochemistry 2017] > Hexokinase vs Glucokinase > Flashcards

Flashcards in Hexokinase vs Glucokinase Deck (10):
1

Has a considerably higher Km (lower affinity) for glucose

Glucokinase

2

Present in most tissue

Hexokinase

3

Its activity increases with increases in the concentration of glucose in the hepatic portal vein

Glucokinase

4

Can phosphorylate glucose and other hexoses

Both Hexokinase and Glucokinase

5

It acts to ensure an adequate rate of glycolysis to meet the liver’s needs

Hexokinase

6

Present only in liver parenchymal cells and Islet cells of the pancreas

Glucokinase

7

Has a low Km for glucose

Hexokinase

8

High Vmax (Many enzymes) and Km (low affinity)

Glucokinase

9

In the liver it is saturated and acting at a constant rate under all normal conditions

Hexokinase

10

Liver activity induced by insulin

Glucokinase