Table 2.

Reversal potentials and slope conductances of oocytes expressing chimeric transporters

Chimera name	Figure	n	ND96		HCO3–CO2		Cotransport current
			END96	GND96 (μS)	EHCO3	GHCO3 (μS)	ENBC	GNBC (μS)
water	Fig. 1A	5	−41.0 ± 5.6	1.1 ± 0.1	−47.4 ± 6.6	0.8 ± 0.1	−27.7 ± 2.8	−0.4 ± 0.1
NBCe1-A	Fig. 1B	7	−36.5 ± 1.2	7.7 ± 0.9	−91.5 ± 2.8	24.0 ± 1.4	−129.3 ± 4.5*	12.5 ± 0.9**
NBCn1-B	Fig. 1C	7	−33.4 ± 5.1	5.9 ± 0.3	−26.2 ± 0.5	4.7 ± 0.2	−23.7 ± 1.8	−1.3 ± 0.3
n1(Nt)/e1	Fig. 3	7	−43.2 ± 2.4	3.2 ± 0.4	−98.9 ± 4.8	6.0 ± 0.6	−156.3 ± 9.2*	3.0 ± 0.4**
n1(L)/e1	—	6	−37.9 ± 2.2	4.9 ± 0.5	−100.3 ± 2.5	14.3 ± 0.9	−140.9 ± 6.4*	11.1 ± 0.7**
n1(Ct)/e1	—	7	−43.2 ± 2.1	3.0 ± 2.1	−113.1 ± 1.9	9.8 ± 1.1	−123.8 ± 1.6*	9.7 ± 1.2**
n1(NtLCt)/e1	Fig. 4	5	−38.0 ± 2.5	1.9 ± 0.1	−94.0 ± 3.9	5.7 ± 0.6	−120.9 ± 3.3*	3.7 ± 0.6**
e1(Nt)/n1	Fig. 5	7	−27.2 ± 0.4	6.1 ± 0.3	−27.9 ± 0.4	5.2 ± 0.3	−24.9 ± 2.0	−0.9 ± 0.9
e1(L)/n1	—	7	−30.9 ± 1.1	6.3 ± 0.5	−33.0 ± 1.1	4.9 ± 0.3	−22.6 ± 1.2	−1.3 ± 0.2
e1(Ct)/n1	—	6	−30.4 ± 1.3	4.1 ± 0.3	−33.6 ± 3.0	3.1 ± 0.5	−23.5 ± 3.3	−0.9 ± 0.3
e1(NtLCt)/n1	Fig. 6	7	−33.3 ± 0.9	5.6 ± 1.1	−37.8 ± 1.0	3.9 ± 0.9	−23.2 ± 0.8	−1.7 ± 0.3
n1(1–821)/e1	Fig. 7	8	−30.5 ± 2.2	1.3 ± 0.2	−32.3 ± 2.5	0.9 ± 0.2	−26.4 ± 1.6	−0.4 ± 0.1
n1(822–1218)/e1	Fig. 8	7	−30.3 ± 0.6	7.7 ± 1.0	−32.5 ± 0.8	6.4 ± 0.9	−20.8 ± 1.2	−1.3 ± 0.2

Conductance (G) was computed from current–voltage (I–V) values crossing the zero currents.

^{* and **}Significant compared to water-injected controls (P < 0.05).