![Figure 6. Diminished difference between 125 mM and 0 mM Nao at large negative potentials in ΔYY and ΔKESYY truncated Na/K pumps. (A–D) Mean ouabain-sensitive outward Na/K pump currents (normalized as in Fig. 3 D; mean ± SEM of 6–12 oocytes from at least two frogs) at 15 mM [Ko] and 0 mM Nao (open squares) or 125 mM Nao (closed squares) for ΔKESYY (A and C) and ΔYY (B and D) truncated pumps are shown superimposed on the corresponding I-V plots for the parent C113Y (A and B) and RD (C and D) pumps: (A) C113Y (red) and C113Y-ΔKESYY (blue); (B) C113Y (red) and C113Y-ΔYY (olive); (C) RD (green) and RD-ΔKESYY (magenta); (D) RD (green) and RD-ΔYY (orange). Error bars represent SEM.](https://cdn.rupress.org/rup/content_public/journal/jgp/136/1/10.1085_jgp.201010407/4/jgp_201010407_rgb_fig6.jpeg?Expires=1767689680&Signature=mG-2l-yoc8cLMGZ071eYqgq6U7Figb8XnKf0Wcmv~wikjyjNXZGxNYni6yU4NDJTRTuIk5o8akvWdBT~X~lSCp9~6gDxiqf1DB-zbbj88ffsvoYea58~0M9MVLpw8wsU4zEFTY6EFXHcsq1lewIZRe~w-jS75ducNHvhqbx7SnehfFkxLMKiDqsth19TrPJZ8PZO4TBzBQClk3lTRxsO886TGAPNPdOX-da2rok5OJEkHBUL3EJyQ1Fcj16TOTTGh5PiyqfxKuYHeH8vnirGsWrzwA0SfGXM5XTufPLbgAVYGDMipXnJUKpYFWAqMFsoFqmTkn1RFrCW1kLcHD62DQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 6.
Diminished difference between 125 mM and 0 mM Nao at large negative potentials in ΔYY and ΔKESYY truncated Na/K pumps. (A–D) Mean ouabain-sensitive outward Na/K pump currents (normalized as in Fig. 3 D; mean ± SEM of 6–12 oocytes from at least two frogs) at 15 mM [Ko] and 0 mM Nao (open squares) or 125 mM Nao (closed squares) for ΔKESYY (A and C) and ΔYY (B and D) truncated pumps are shown superimposed on the corresponding I-V plots for the parent C113Y (A and B) and RD (C and D) pumps: (A) C113Y (red) and C113Y-ΔKESYY (blue); (B) C113Y (red) and C113Y-ΔYY (olive); (C) RD (green) and RD-ΔKESYY (magenta); (D) RD (green) and RD-ΔYY (orange). Error bars represent SEM.
