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Table 1 Single channel parameters estimated from all-points amplitude histograms

From: Evidence for non-independent gating of P2X2 receptors expressed in Xenopusoocytes

[ATP], (μM) i, (pA) σex, (pA) σex/i,
5 2.80 ± 0.1 2.54 ± 0.14 0.90
10 3.36 ± 0.05 2.42 ± 0.09 0.71
15 3.58 ± 0.03 2.31 ± 0.05 0.64
20 3.61 ± 0.03 2.38 ± 0.05 0.66
30 3.54 ± 0.02 2.31 ± 0.04 0.66
50 3.38 ± 0.03 2.30 ± 0.04 0.68
100 3.60 ± 0.02 2.35 ± 0.04 0.65
  1. Note: The results were obtained from the all-points histograms in Figure 5. The relative excess open channel noises of single channel current are similar except the current activated by 5 μM ATP. This outliner is due to the low open probability that make the fitting of Gaussian distribution unreliable.