Table 2. Transient charge movement... | Rockefeller University Press

Table 2.

Transient charge movement parameters

Condition	Rate₋₁₀₀ (s⁻¹)	Rate₊₄₀ (s⁻¹)	V_0.5 (mV)	Q_tot (nC)	kT/z_qe (mV)	Q_s/Q (%)	n
α1β1	194 ± 21	65 ± 9	−34 ± 5	17 ± 8	34 ± 2	72 ± 6	28
FXYD1	154 ± 14**	68 ± 6	−43 ± 2**	11 ± 3	34 ± 2	66 ± 4*	6
FXYD2	102 ± 19**	67 ± 13	−61 ± 9**	20 ± 8	39 ± 3	59 ± 2**	8
FXYD4	251 ± 51**	59 ± 5	−4 ± 9**	18 ± 13	33 ± 1	78 ± 3*	7
FXYD6	155 ± 19**	80 ± 12**	−54 ± 7**	16 ± 3	37 ± 3	58 ± 4**	16
FXYD7	167 ± 21*	49 ± 6**	−13 ± 4**	16 ± 6	32 ± 4	78 ± 5*	7
α1β1_{−35 mV}	156 ± 20	54 ± 4	−30 ± 4	26 ± 7	29 ± 2	77 ± 7	13
FXYD1_{−35 mV}	120 ± 21**	54 ± 9	−40 ± 7**	18 ± 7	31 ± 2	68 ± 6**	26

Condition	Rate₋₁₀₀ (s⁻¹)	Rate₊₄₀ (s⁻¹)	V_0.5 (mV)	Q_tot (nC)	kT/z_qe (mV)	Q_s/Q (%)	n
α1β1	194 ± 21	65 ± 9	−34 ± 5	17 ± 8	34 ± 2	72 ± 6	28
FXYD1	154 ± 14**	68 ± 6	−43 ± 2**	11 ± 3	34 ± 2	66 ± 4*	6
FXYD2	102 ± 19**	67 ± 13	−61 ± 9**	20 ± 8	39 ± 3	59 ± 2**	8
FXYD4	251 ± 51**	59 ± 5	−4 ± 9**	18 ± 13	33 ± 1	78 ± 3*	7
FXYD6	155 ± 19**	80 ± 12**	−54 ± 7**	16 ± 3	37 ± 3	58 ± 4**	16
FXYD7	167 ± 21*	49 ± 6**	−13 ± 4**	16 ± 6	32 ± 4	78 ± 5*	7
α1β1_{−35 mV}	156 ± 20	54 ± 4	−30 ± 4	26 ± 7	29 ± 2	77 ± 7	13
FXYD1_{−35 mV}	120 ± 21**	54 ± 9	−40 ± 7**	18 ± 7	31 ± 2	68 ± 6**	26

Some FXYD1 experiments and some α1β1 controls started from a holding potential of −35 mV in the Dagan amplifier and are shown separately. Errors represent SD; n is the number of determinations. Q_tot was determined from the Boltzmann fits to Q-V in individual oocytes (Materials and methods). Q_s/Q is the charge of the slow component divided by the steady-state value from the transient-current integral in pulses to +40 mV. Significantly different with respect to α1β1 alone by t test: *P < 0.05; **, P < 0.001.

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