Glycerate 3-phosphate

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Chemical structure of glycerate 3-phosphate

Glycerate 3-phosphate

Systematic (IUPAC) name
(2R)-2-hydroxy-3-phosphonooxy-propanoic acid
CAS number 820-11-1
PubChem         439183
Chemical data
Formula C3H7O7P 
Molar mass 186.058
Complete data

Glycerate 3-phosphate (GP) or 3-phosphoglycerate (3PG) is a biochemically significant 3-carbon molecule that is a metabolic intermediate in both glycolysis and the Calvin cycle. This chemical is often termed PGA when referring to the Calvin cycle. 3-phosphoglycerate is the resultant of the split of 6 carbon intermediate that is so unstable it splits instantly. And two 3-phosphoglycerate is produced for each molecule of CO2


1,3-bisphospho-D-glycerate 3-phosphoglycerate kinase 3-phospho-D-glycerate Phosphoglyceromutase 2-phospho-D-glycerate
1,3-bisphospho-D-glycerate wpmp.png   3-phospho-D-glycerate wpmp.png   2-phospho-D-glycerate wpmp.png
Biochem reaction arrow reversible YYYY horiz med.png Biochem reaction arrow reversible NNNN horiz med.png
  3-phosphoglycerate kinase   Phosphoglyceromutase

Calvin cycle

In the Calvin cycle, two glycerate 3-phosphate molecules are reduced to form two molecules of glyceraldehyde 3-phosphate (PGAL). This is the first compound formed during the C3 or Calvin cycle. It is a reactive biomolecule which is easily reduced.

Amino acid synthesis

Glycerate 3-phosphate is also a precursor for serine, which in turn, can create several other amino acids (such as glycine.)

External links

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