Table 1.

Low pH biases inactivation to a state from which recovery is fast

	pH 7.4	pH 5.4
	inactivation at +50 mV	inactivation at +50 mV	inactivation at −80 mV
A0	0.53 ± 0.10	0.02 ± 0.01	0.08 ± 0.08
Arec,f**	0.47 ± 0.19	0.71 ± 0.07	0.89 ± 0.04
τrec,f	1.63 ± 0.1 s	*	*
Arec,s**	0.53 ± 0.19	0.29 ± 0.07	0.11 ± 0.04
τrec,s	13.52 ± 2.9 s	*	*

^*Constrained to be the same as control (pH 7.4) values.

^**Presented as proportion of total inactivating current. Data are from experiments described in Fig. 5A and B and are shown as mean ±s.e.m. for 6 cells.