Receptor | p Ca2+/ p Na+ | Fractional Ca2+ Current | Reference |
---|---|---|---|
% | |||
P2X1 | ∼5 | Valera et al., 1994; Evans et al., 1996 | |
P2X2 | 2.7 | 6.5 | Rogers and Dani, 1995; Evans et al., 1996 |
P2X3 | 1.2–4 | Lewis et al., 1995; Virginio et al., 1998a | |
P2X4 | 4.2 | 8.2 | Buell et al., 1961; Soto et al., 1996b; Garcia-Guzman et al., 1997 |
P2X2/3 | 1.3 | Virginio et al., 1998a | |
P2X1/5 | 1.1 | Surprenant et al., 2000 | |
NMDA | 10.4 | 8–12 | Burnashev, 1998 |
AMPA | 0.09 | 1–4 | |
α7-Nicotinic | 6.6–20 | Seguela et al., 1993; Fucile et al., 2000 | |
5HT3A 1-a | 1.08 | Davies et al., 1999 | |
5HT3A/B 1-a | 0.62 |
AMPA, α-amino-3-hydroxy-5-methyl-4-isoxazoleproprionic acid; NMDA, N -methyl-d-aspartate.
↵1-a The value given is p Ca2+/ p Cs+, and p Na+/ p Cs+ is 0.8 for 5HT3A, and 0.83 for 5HT3A/B.