GLUT (glucose transporter) proteins

Definition

GLUT (glucose transporter) proteins are a family of membrane proteins that facilitate the transport of glucose across the plasma membranes of cells. They play a critical role in cellular respiration by regulating glucose entry into cells.

5 Must Know Facts For Your Next Test

1. GLUT1 is responsible for basal glucose uptake and is found in most tissues.
2. GLUT4 is insulin-regulated and primarily found in adipose tissue and muscle.
3. GLUT2 has a low affinity for glucose and functions as a glucose sensor mainly in the liver and pancreas.
4. The activity of GLUT proteins is crucial for maintaining cellular energy levels during cellular respiration.
5. Mutations or malfunctions in GLUT proteins can lead to metabolic disorders such as Type 2 diabetes.

Related terms

Insulin:

A hormone that regulates blood glucose levels by facilitating cellular glucose uptake, particularly through GLUT4.

Cellular Respiration: A set of metabolic processes that convert biochemical energy from nutrients into ATP, involving glycolysis, the Krebs cycle, and oxidative phosphorylation.

ATP (Adenosine Triphosphate): The primary energy carrier in cells, produced during cellular respiration to power various cellular activities.