Where are GLUT2 receptors found?
GLUT2 is a facilitative glucose transporter located in the plasma membrane of the liver, pancreatic, intestinal, kidney cells as well as in the portal and the hypothalamus areas.
Are GLUT2 receptors insulin dependent?
It is the principal transporter for transfer of glucose between liver and blood Unlike GLUT4, it does not rely on insulin for facilitated diffusion.
How does insulin affect GLUT2?
RESULTS AND CONCLUSIONS—In Caco-2/TC7 cells, insulin action diminished the transepithelial transfer of sugar and reduced BBM and basolateral membrane (BLM) GLUT2 levels, demonstrating that insulin can target sugar absorption by controlling the membrane localization of GLUT2 in enterocytes.
What is the role of GLUT2?
GLUT2 is the major glucose transporter inβ -cells of pancreatic islets and hepatocytes. In both cell types, GLUT2 mediates the facilitated diffusion of glucose across the cell membranes, and then intracellular glucose metabolism is initiated by the glucose-phosphorylating enzyme, hexokinase IV or glucokinase.
What is the function of GLUT 2?
Where is GLUT3 found?
GLUT3 is the most prominent glucose transporter isoform expressed in adult brain, where it tends to be preferentially located in neurones, rather than in other cell types, such as glia or endothelial cells. It is also widely distributed in other human tissues, having been detected in the liver, kidney and placenta.
Where is GLUT2 receptors located?
GLUT2 is a facilitative glucose transporter located in the plasma membrane of the liver, pancreatic, intestinal, kidney cells as well as in the portal and the hypothalamus areas. Simply so, what are GLUT receptors?
What does GLUT2 stand for?
Glucose transporter 2 ( GLUT2) also known as solute carrier family 2 (facilitated glucose transporter), member 2 ( SLC2A2) is a transmembrane carrier protein that enables protein facilitated glucose movement across cell membranes.
Is GLUT2 an integral component of the β-cell glucose sensor?
The temporal correlation between reduction of GLUT2 protein and mRNA and loss of glucose-stimulated insulin secretion suggests that GLUT2 is an integral component of the β cell glucose sensor and that decreased expression of this transporter accounts at least in part for β cell failure in diabetes mellitus.
What is the function of GLUT2 in the pancreas?
GLUT2 has high capacity for glucose but low affinity (high Km, ca. 15-20 mM) and thus functions as part of the “glucose sensor” in the pancreatic β-cells of rodents, though in human β-cells the role of GLUT2 seems to be a minor one.