It can work maximally at low glucose concentrations (fasting levels of glucose are 3-5mM) so that it is always working at vmax
Hexokinase
Hexokinase is an enzyme that catalyzes the first step in glucose metabolism by phosphorylating glucose to form glucose-6-phosphate. This enzyme plays a crucial role in maintaining glucose homeostasis and energy production in cells. There are different isoforms of hexokinase that are found in various tissues, each with specific functions and regulatory properties.
Glucokinase
Describe how a network works
Hexokinase is an enzyme involved in the phosphorylation of hexose (five carbon sugar). It speeds the process on adding a phosphorus to the sugar.
Hexokinase
ATP inhibits hexokinase by competing with glucose for binding at the active site of the enzyme. When ATP is bound, it causes a conformational change that prevents glucose from binding and being phosphorylated. This inhibition helps regulate the glycolytic pathway by ensuring that hexokinase is only active when ATP levels are low.
It is not inducible by insulin
Hexokinase
Glucose is the substrate that is converted into glucose 6-phosphate by the enzyme hexokinase. Hexokinase catalyzes the phosphorylation of glucose to glucose 6-phosphate in the first step of glycolysis.
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