You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 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? and explain in detail?
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.