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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: Hum Mutat. 2016 Aug 21;37(10):1051–1059. doi: 10.1002/humu.23043

Table 1. Open intervals and burst durations of wild-type and mutant AChRs on HEK cells.

Open Intervals Bursts
τ1, ms τ2, ms τ3, ms τ1, ms τ2, ms τ3, ms
(a1) (a2) (a3) (a1) (a2) (a3)
Wild type 0.037 ± 0.033a 0.31 ± 0.050 1.35 ± 0.051 0.036 ± 0.0017b 0.47 ± 0.059 3.31 ± 0.12
(0.17 ± 0.022) (0.27 ± 0.038) (0.67 ± 0.042) (0.24 ± 0.021) (0.21 ± 0.027) (0.58 ± 0.038)
βV266A 0.068 ± 0.0072 0.85 ± 0.087 2.27 ± 0.10 0.073 ± 0.0068 0.88 ± 0.21 13.35 ± 0.87
(p.Val289Ala) (0.20 ± 0.0050) (0.55 ± 0.031) (0.25 ± 0.030) (0.41 ± 0.041) (0.20 ± 0.045) (0.39 ± 0.046)
εV265A 0.035 ± 0.0025 0.31 ± 0.030 2.61 ± 0.010 0.048 ± 0.0070 0.44 ± 0.020 14.33 ± 0.31
(p.Val285Ala) (0.18 ± 0.0080) (0.18 ± 0.027) (0.65 ± 0.019) (0.43 ± 0.020) (0.29 ± 0.033) (0.28 ± 0.014)
εV265G 0.080 ± 0.011 1.34 ± 0.33 5.30 ± 0.38 0.082 ± 0.0026 1.60 ± 0.39 24.46 ± 3.07
(p.Val285Gly) (0.090 ± 0.013) (0.30 ± 0.026) (0.61 ± 0.022) (0.13 ± 0.013) (0.24 ± 0.063) (0.64 ± 0.050)
εV265L 0.032 ± 0.0079 0.52 ± 0.039 3.80 ± 0.66 0.035 ± 0.0090 0.39 ± 0.025 10.82 ± 1.10
(p.Val285Leu) (0.36 ± 0.061) (0.21 ± 0.028) (0.44 ± 0.071) (0.52 ± 0.056) (0.21 ± 0.048) (0.28 ± 0.095)
αV255A 0.046 ± 0.0052 0.34 ± 0.022 6.31 ± 0.48 0.079 ± 0.012 0.55 ± 0.083 26.59 ± 2.70
(p.Val275Ala) (0.23± 0.020) (0.09 ± 0.0040) (0.67 ± 0.028) (0.32 ± 0.055) (0.12 ± 0.017) (0.56 ± 0.053)
δV269A 0.042 ± 0.0034 0.35 ± 0.073 4.72 ± 0.77 0.047± 0.0076 0.59 ± 0.090 13.90 ± 1.89
(p.Val290Ala) (0.22 ± 0.057) (0.11 ± 0.028) (0.67 ± 0.079) (0.30 ± 0.096) (0.10 ± 0.012) (0.60 ± 0.099)

Values indicate mean ± SE of 21 patches for wild-type and at least 3 patches for all mutants. All patches with ACh 50 nM at final bandwidth 11.7 -12 kHz. MP = -80 mV.

a, b

τ1 components of opening intervals and bursts were not detected at 12 and 3 patches, respectively, in wild-type AChR. HGVS nomenclature is shown in parentheses.