Glucokinase is an enzyme that plays a crucial role in glucose metabolism. It is primarily found in the liver and pancreatic beta cells, where it helps convert glucose into glucose-6-phosphate. This process is essential for regulating blood sugar levels and storing energy. Unlike other forms of hexokinase, glucokinase has a higher threshold for glucose, meaning it only becomes active when glucose levels are elevated. This characteristic allows the body to efficiently manage glucose during meals, ensuring that excess sugar is stored rather than remaining in the bloodstream.