Oxidation of glyceraldehyde 3-phosphate to 3- phosphogylceric acid not occur directly in the cell because high concentration of NADH in the cell will drive the formation of 1,3- diphosphoglycerate at the rate greater than the direct oxidation of glyceraldehyde 3-phosphate can occur.
Phosphoglyceric acid is the carboxylation product in the light. It includes algae and pteridophytes. Oxidation of glyceraldehyde 3-phosphate is oxidized by NAD and other inorganic phosphate. This plays a important role in the glucose oxidation. It involves the glycolytic pathway under pre-oxidant conditions. GAPDH catalyzes the transformation of glyceraldehyde 3-phosphate and it forms glycerate-1,3-biphosphate.this process involves oxidation of NADH to NAD+ through glycolytic pathway. This involves the oxidation of glucose to pyruvate with the generation of ATP and NADH.
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