Glucose transporters (GLUT and SGLT): expanded families of Glucose transporter proteins: Diabetes mellitus: Adipose tissue: Muscle: Sugar transport. Glucose transporter 1 (or GLUT1), also known as solute carrier family 2, facilitated glucose transporter member 1 (SLC2A1), is a uniporter protein that in humans. Sodium-dependent glucose cotransporters are a family of glucose transporter found in the intestinal mucosa (enterocytes) of the small intestine (SGLT1) and the.
|Published (Last):||5 November 2006|
|PDF File Size:||14.93 Mb|
|ePub File Size:||10.2 Mb|
|Price:||Free* [*Free Regsitration Required]|
Lehninger, Principles of Biochemistry. Crane in was the first to formulate the cotransport concept to explain active transport .
The New England Journal of Medicine. Crane presented for the first time his discovery of the sodium-glucose cotransport as the mechanism for intestinal glucose absorption. Generalized seizures arise diffusely and simultaneously from both hemispheres of the brain.
In the adult it is expressed at highest levels in erythrocytes and also in the endothelial cells of barrier tissues such as the blood—brain barrier. These co-transporters are an example of secondary active transport. Chromosome 1 human . Retrieved from ” https: The Journal of Biological Chemistry. Glucose enters the erythrocyte by facilitated diffusion via a specific glucose transporter, at a rate about 50, times greater than uncatalyzed transmembrane diffusion.
GLUT 1 is highly conserved. Views Read Edit View history. More reference expression data.
Other variable features may include seizures, migraine headaches, and ataxia. Journal of Computational Chemistry. This page was last edited on 16 Novemberat Molecular Genetics and Metabolism. Biochimica et Biophysica Acta. Onset of seizuresusually characterized by apneic episodesstaring spells, and episodic eye movementsoccurs within the first 4 months of life.
If the plasma glucose concentration is too high hyperglycemiaglucose is excreted in urine glucosuria because SGLT are saturated with the filtered glucose. Although a clear consensus has not been reached, a large number of scientists adhere to a substrate-transport model to account for the catalytic properties of glucosephosphatase. Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator.
The transfer of the glucose 6-phosphate is carried out by a transporter protein T1 and the endoplasmic reticulum ER contains structures allowing the exit of the phosphate group T2 and glucose T3. Orphanet Journal of Rare Diseases. GLUT1 expression occurs in almost all tissues, with the degree of expression typically correlating with the rate of cellular glucose metabolism. Membrane proteinscarrier proteins: Click on genes, proteins and metabolites below to link to respective articles.
However, sequence alignment has shown that glucosephosphatase is structurally similar to the active site of the vanadium-containing chloroperoxidase found in Curvularia inaequalis.
Fasentin is a small molecule inhibitor of the intracellular domain of GLUT1 preventing glucose uptake. Molecular Biology of the Cell. The phospho-intermediate produced by the reaction between His and the phosphate group is transportter broken by a hydrophilic attack; after the addition of another hydroxide and the decomposition of a carbonyl, the carbonyl is reformed kicking off the electrons originally donated by the His residue thereby creating a transporte phosphate group and completing the hydrolysis.
Varying degrees of cognitive impairment can occur, ranging from learning disabilities to severe mental retardation.
This page was last edited on 29 Juneat Due to its tight association to the ER, the exact structure of glucosephosphatase remains unknown.
Mild mental retardation may also occur. Glucose 6-phosphatase EC 3. By group SLC1—10 1: