A monophosphoglyceric acid having the phospho group at the 3-position. It is an intermediate in metabolic pathways like glycolysis and calvin cycle.
ChEBI ID: 17050
There is 1 compound belonging to this class, involving 3 study.
| Member | Definition | Role |
|---|---|---|
| 3-phospho-D-glyceric-acid | The D-enantiomer of 3-phosphoglyceric acid | Escherichia coli metabolite; mouse metabolite |
| Pre-1990 | 1990-2000 | 2001-2010 | 2011-2020 | Post-2020 |
|---|---|---|---|---|
| 0 | 3 | 0 | 0 | 0 |
| Article |
|---|
Synthesis and binding of stable bisubstrate ligands for phosphoglycerate kinase.
Stable bisubstrate ligands of phosphoglycerate kinase (PGK) have been synthesized with AMP or ADP conjugated to hydrolytically-stable, symmetrical analogues of 1,3-bisphosphoglycerate and their binding to yeast PGK evaluated. Their Kds decrease with net negative charge, with a penta-anionic analogue 7 showing highest affinity-in accordance with its approximation to the transition state for the reaction catalysed by PGK. |
Highly potent bisphosphonate ligands for phosphoglycerate kinase.
We have synthesized a series of novel analogs of 1, 3-bisphospho-D-glyceric acid, 1,3-BPG,3 and evaluated their binding to phosphoglycerate kinase, PGK (EC 2.7.2.3). Nonscissile methanephosphonic acids replace the two phosphate monoesters of 1, 3-BPG and lead to several stable, tight-binding mimics of this intermediate species in glycolysis. Multiple fluorine substitution for hydrogen in the alpha-methylene groups of the phosphonic acid 1, 3-BPG analogs markedly improves their binding to PGK as determined by NMR analysis. The best ligands bind some 50-100 times more strongly than does the substrate 3-phospho-D-glyceric acid and show a requirement for pKa3 to be generally below 6.0, while the presence of a beta-carbonyl group seems to be of secondary importance. |
The adaptability of the active site of trypanosomal triosephosphate isomerase as observed in the crystal structures of three different complexes.
Crystals of triosephosphate isomerase from Trypanosoma brucei brucei have been used in binding studies with three competitive inhibitors of the enzyme's activity. Highly refined structures have been deduced for the complexes between trypanosomal triosephosphate isomerase and a substrate analogue (glycerol-3-phosphate to 2.2 A), a transition state analogue (3-phosphonopropionic acid to 2.6 A), and a compound structurally related to both (3-phosphoglycerate to 2.2 A). The active site structures of these complexes were compared with each other, and with two previously determined structures of triosephosphate isomerase either free from inhibitor or complexed with sulfate. The comparison reveals three conformations available to the "flexible loop" near the active site of triosephosphate isomerase: open (no ligand), almost closed (sulfate), and fully closed (phosphate/phosphonate complexes). Also seen to be sensitive to the nature of the active site ligand is the catalytic residue Glu-167. The side chain of this residue occupies one of two discrete conformations in each of the structures so far observed. A "swung out" conformation unsuitable for catalysis is observed when sulfate, 3-phosphoglycerate, or no ligand is bound, while a "swung in" conformation ideal for catalysis is observed in the complexes with glycerol-3-phosphate or 3-phosphonopropionate. The water structure of the active site is different in all five structures. The results are discussed with respect to the triosephosphate isomerase structure function relationship, and with respect to an on-going drug design project aimed at the selective inhibition of glycolytic enzymes of T. brucei. |