Glucokinase deficiency is a rare genetic disorder that affects the enzyme glucokinase, which plays a crucial role in glucose metabolism by facilitating the conversion of glucose to glucose-6-phosphate in the liver and pancreas. This deficiency leads to impaired insulin secretion and results in a form of Diabetes known as maturity-onset diabetes of the young (MODY). Patients may experience episodes of hyperglycemia and hypoglycemia, particularly during fasting or illness, due to the enzyme's inability to effectively regulate blood sugar levels. Management typically involves dietary modifications and monitoring blood glucose levels.
You can't produce insulin
Glucokinase
Glucokinase Regulatory Protein is found in the nucleus which binds glucokinase to inactive it
in the cytosol
glucokinase. glucokinase has a high km(low affinity for glucose) so glucokinase only phosphorylates glucose when blood glucose is high, such as after a meal. As such, it makes sense that this would be sensor for B-cells
glucokinase
glucokinase
Hexokinase
It is not inducible by insulin
equilibriates between the nucleus and cytosol
Glucokinase is often referred to as the 'glucose sensor' as it directly relates the rate of β-cell glucose-dependent insulin secretion and the rate of hepatocyte glucose metabolism to the ambient blood glucose level. Read more in related link below.
Pancreatic Beta cells and liver hepatocytes. Read more in link.