Glucose tolerance

From WikiMD's Wellness Encyclopedia

Glucokinase regulator (GKRP) is a protein that in humans is encoded by the GCKR gene. It is an important component of the glucose homeostasis mechanism in the liver.

Function[edit | edit source]

Glucokinase (GK) is a key enzyme in the regulation of carbohydrate metabolism. It functions as a glucose sensor, triggering shifts in metabolism or cell function in response to rising or falling levels of glucose, such as occur after a meal or when fasting. The glucokinase regulator protein binds to GK in the nucleus and inhibits its activity. This binding is reversible, and is mediated by fructose metabolites. When fructose-1-phosphate is high, the glucokinase regulator protein releases GK to the cytoplasm, where it can stimulate glycolysis.

Clinical significance[edit | edit source]

Mutations in the GCKR gene have been associated with type 2 diabetes, hypertriglyceridemia, and polycystic ovary syndrome. Studies have also suggested a link between the GCKR gene and fatty liver disease.

See also[edit | edit source]

References[edit | edit source]




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