Glucose-6-phosphate exchanger SLC37A4

[8] The G6Pase complex is most abundant in liver tissue, but also present in kidney cells, small intestine, pancreatic islets and at a lower concentration in the gallbladder.

The translocases are spatially located on either side of the active site of the hydrolyzing component within the membrane, which allows the greatest speed and facility of the reaction.

[11] Each of the translocase subunits performs a specific function in the transport of substrates and products, and finally release of glucose (which will eventually reach the bloodstream), as a step in glycogenolysis or gluconeogenesis.

[13] The originally proposed mechanism of the G6Pase system involved a relatively unspecific hydrolase, suggesting that G6PT1 alone provides the high specificity for the overall reaction by selective transport into the lumen, where hydrolysis occurs.

[14] Inhibitors of G6PT1 are the most studied as this subunit catalyzes the rate limiting step in glucose production through gluconeogenesis or glycogenolysis, and without its function these two processes could not occur.

Prominent examples of natural inhibitors include mumbaistatin and analogs, kodaistatin (harvested from extracts of Aspergillus terreus)[9] and chlorogenic acid.

[17] The rapidly rising prevalence of type 2 diabetes, along with its strong correlation to heart disease and other health complications has rendered it an area of intense research with an urgent need for treatment options.

Figure 1: Schematic representation of Glucose-6-Phosphate Translocase within the Glucose-6-Phosphatase Complex