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Glucose transporters are a wide group of membrane proteins that facilitate the transport of glucose across the plasma membrane, a process known as facilitated diffusion. Because glucose is a vital source of energy for all life, these transporters are present in all phyla .
Facilitated Diffusion is a passive process that relies on carrier proteins to transport glucose down a concentration gradient. [ 2 ] Secondary Active Transport is transport of a solute in the direction of increasing electrochemical potential via the facilitated diffusion of a second solute (usually an ion, in this case Na + ) in the direction ...
A membrane transport protein is a membrane protein involved in the movement of ions, small molecules, and macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins ; that is they exist permanently within and span the membrane across which they transport substances.
SLC5A4, also known as SGLT3, is a member of the sodium-glucose cotransporter family. Unlike SGLT1 and SGLT2, which are efficient glucose transporters, SGLT3 functions primarily as a glucose sensor rather than a transporter. It has a low affinity for glucose and does not significantly contribute to glucose transport across cell membranes.
Glucose transporters are integral membrane proteins that mediate the transport of glucose and structurally related substances across cellular membranes.Two families of glucose transporter have been identified: the facilitated diffusion glucose transporter family (GLUT family), also known as uniporters, and the sodium-dependent glucose transporter family (SGLT family), also known as ...
n/a Ensembl n/a n/a UniProt n a n/a RefSeq (mRNA) n/a n/a RefSeq (protein) n/a n/a Location (UCSC) n/a n/a PubMed search n/a n/a Wikidata View/Edit Human 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 is encoded by the SLC2A1 gene. GLUT1 facilitates the transport of glucose across ...
Cells also contain anion antiporters such as the Band 3 (or AE1) anion transport protein. This cotransporter is an important integral protein in mammalian erythrocytes and moves chloride ion and bicarbonate ion in a one-to-one ratio across the plasma membrane based only on the concentration gradient of the two ions.
The mannose PTS in E. coli has the same overall structure as the B. subtilis glucose PTS, i.e. the IIABC domains are fused into one protein. In the process of glucose PTS transport specific of enteric bacteria, PEP transfers its phosphoryl to a histidine residue on EI. EI in turn transfers the phosphate to HPr.