GLUT2 is a type of glucose transporter protein found in various tissues, including the liver, pancreas, and intestines. It plays a crucial role in the regulation of glucose levels in the body by facilitating the transport of glucose across cell membranes. This process is essential for maintaining energy balance and metabolic homeostasis. In the pancreas, GLUT2 helps regulate insulin secretion in response to blood sugar levels. When glucose levels rise, GLUT2 allows glucose to enter pancreatic beta cells, triggering the release of insulin. This insulin then helps cells throughout the body absorb glucose, lowering blood sugar levels and providing energy for cellular functions.