Reversal of vanadium(+4)-evoked inhibition of acid phosphatase at pH 7.2 by various chelators
| Ligand | Concentration for Half-Maximally Reversing Vanadium(+4)-Evoked Inhibition of Acid Phosphatase | Formation Constant Keff/pH 7.2 |
|---|---|---|
| mM | [103M−1] | |
| EDTA | 0.024 ± 0.003 | 41.4 |
| Picolinate | 0.17 ± 0.008 | 5.8 |
| Maltolate | 0.48 ± 0.03 | 2.07 |
| l-Glu(γ)HXM | 6.0 ± 0.4 | 0.165 |
| l-Asp(β)HXM | 5.4 ± 0.3 | 0.184 |
| l-Ile(α)HXM | 21 ± 3 | 0.047 |
| GSH | >100 | <0.01 |
| Citrate | >100 | <0.01 |
| l-Gln | >100 | <0.01 |
| l-Asn | >100 | <0.01 |
| l-Glu | >100 | <100 |