A lady developed severe hyperglycemia in pregnancy and returned to normal after pregnancy with similar history in her mother and sister. What is the Enzyme defect?
The given description suggests of Maturity onset diabetes of young. MODY is due to mutation in a single gene Inheritance: Autosomal dominant Absence of autoantibodies Absence of ketosis MODY2 Glucokinase gene location: chromosome 7 Glucokinase acts as a sensor for glucose. It has high Km value. In beta cells of pancreas,it acts only when glucose level is high and release the insulin. Due to mutation in glucokinase,insulin is not released even when glucose is high and hyperglycemia is seen Reference: Harpers illustrated biochemistry 30th edition.
PFK
Glucokinase
Enolase
Aldolase
Structure and function of protein