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Glucose 6-phosphatase-β is a ubiquitously expressed, 346-amino acid membrane protein that shares 36% sequence identity with glucose 6-phosphatase-α. Within the glucose 6-phosphatase-β enzyme, sequence alignments predict that its active site contains His167, His114, and Arg79.
Glucose-6-phosphatase, catalytic subunit (glucose 6-phosphatase alpha) is an enzyme that in humans is encoded by the G6PC gene. [ 5 ] [ 6 ] Glucose-6-phosphatase is an integral membrane protein of the endoplasmic reticulum that catalyzes the hydrolysis of D-glucose 6-phosphate to D-glucose and orthophosphate.
This gene encodes the catalytic subunit of glucose 6-phosphatase (G6Pase). G6Pase is located in the endoplasmic reticulum (ER) and catalyzes the hydrolysis of glucose 6-phosphate to glucose and phosphate in the last step of the gluconeogenic and glycogenolytic pathways. [5]
Glucose-6-phosphate exchanger SLC37A4, also known as glucose-6-phosphate translocase, is an enzyme that in humans is encoded by the SLC37A4 gene. [ 5 ] [ 6 ] [ 7 ] It consists of three subunits , each of which are vital components of the multi-enzyme Glucose-6-Phosphatase Complex (G6Pase).
English: glucose-6-phosphatase system: in the end of the gluconeogenesis glc-6-p is transported into the ER (G6PT = T1) and dephosphorylated (G6Pase). Glucose is transported out of the cell passing two glucose-transporters (GLUT7 = T3 and GLUT2). Inorg. Phosphate is transported back to the cytosol by the T2 transporter
This gene encodes an enzyme belonging to the glucose-6-phosphatase catalytic subunit family. These enzymes are part of a multicomponent integral membrane system that catalyzes the hydrolysis of glucose-6-phosphate, the terminal step in gluconeogenic and glycogenolytic pathways, allowing the release of glucose into the bloodstream.
The G6P remains within the liver cell unless the phosphate is cleaved by glucose-6-phosphatase. This dephosphorylation reaction produces free glucose and free PO 4 anions. The free glucose molecules can be transported out of the liver cells into the blood to maintain an adequate supply of glucose to the brain and other organs. Glycogenolysis ...
The cleaved molecule is in the form of glucose 1-phosphate, which can be converted into G6P by phosphoglucomutase. Next, the phosphoryl group on G6P can be cleaved by glucose 6-phosphatase so that a free glucose can be formed. This free glucose can pass through membranes and can enter the bloodstream to travel to other places in the body.