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PGA , phosphoglycerate, glyceric acid phosphate

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PGA (phosphoglyceric acid), phosphoglycerate, glyceric acid phosphate or glycerate 3-phosphate

a three-carbon molecule produced from PGAL (see Fig. 250) in GLYCOLYSIS. PGA is a molecule with a similar structure to PGAL, except that a hydroxyl (OH) replaces a hydrogen atom at one point.PGA is also a vital molecule in photosynthesis, being produced in the CALVIN CYCLE from an unstable six-carbon molecule formed when ribulose diphosphate and carbon dioxide combine.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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