Nucleotide | P2X21-a | P2X31-b | P2X2+ P2X3 (I2)1-c |
---|---|---|---|
ATP | 4.3 ± 0.8 | 1.4 ± 0.3 | 1.2 ± 0.3 |
2-MeSATP | 6.9 ± 1.2 | 0.2 ± 0.03 | 0.8 ± 0.2 |
ATPγS | 8.4 ± 1.9 | 1.5 ± 0.4 | 9.4 ± 1.3 |
α,β-meATP | Inactive | 1.9 ± 0.3 | 8.6 ± 1.2 |
β,γ-meATP | >300 | 9.2 ± 2.4 | >100 |
Ap5A | Inactive | 0.6 ± 0.1 | 1.1 ± 0.3 |
UTP | Inactive | >100 | >100 |
Agonist potency given in terms of EC50 value (μM) (mean ± S.E., n = 4–7).