phosphoglyceric acid

views updated May 18 2018

phosphoglyceric acid (PGA) A 3-carbon organic acid formed during glycolysis that is the first relatively stable compound formed in the Calvin cycle after the fixation of carbon dioxide in C3 plants. The first product, an unstable 6-carbon compound, is formed when carbon dioxide combines with ribulose diphosphate.

A Dictionary of Plant Sciences MICHAEL ALLABY

phosphoglyceric acid

views updated May 11 2018

phosphoglyceric acid (PGA; 3-phosphoglycerate) See glycerate 3-phosphate.

A Dictionary of Biology

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