Figure 9.
![Figure 9. The relationships between pHt and pHcyto and between NHE flux and pHcyto in polarizing, K-based solutions. (A) The steady-state pHt versus pHcyto in high [K+]cyto–based solutions in all 10 fibers investigated. (B) Result from three fibers with multiple measurements at different pHcyto plotted as means ± SEM. (C) NHE-proton flux normalized to the response in pH-6.8 K-based solution derived from the results shown in B using Eq. 20 (predicted) and expected curve for NHE proton flux based on Eq. 15, normalized to the value in pH-6.8 K-based solution (Cha’s model). Results are means ± SEM. Note that the (predicted) normalized ΦH-NHE fluxes for individual fibers changes little if the Vm value is between −75 and −90 mV.](https://cdn.rupress.org/rup/content_public/journal/jgp/150/1/10.1085_jgp.201711891/5/jgp_201711891_fig9.jpeg?Expires=1767727663&Signature=yz20M9aa9LepM9~txsKEWKGWkne62rDOyCaJ5GlLL1tpOFiFh7q62-RiZMTpN4ZRGgMUVGnUp5ruEUqE76u2DWKy79VJgMyviOqhuLQYaLVC9xqxGv3cyOlQjP0TrgRBBx4diYwd9nqiao7YYF1lFSPf07JOWC0JEZVzvzGPXT26BVV3spl~waO1aszaJGpQ1orK4CAOV9jUZEuTTbYR-TQ~KcG6eEjzuRhVS8wAEkU7v8bSubOPH3ciQiXrXuZ2lubIjSrRKFHqflJwCZX~h2ttwB60BkGDLlzEKIYHjAicLHg875hirk6hvPUttvyNIclPOfRXmO4zOZfJYnUpxQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
The relationships between pHt and pHcyto and between NHE flux and pHcyto in polarizing, K-based solutions. (A) The steady-state pHt versus pHcyto in high [K+]cyto–based solutions in all 10 fibers investigated. (B) Result from three fibers with multiple measurements at different pHcyto plotted as means ± SEM. (C) NHE-proton flux normalized to the response in pH-6.8 K-based solution derived from the results shown in B using Eq. 20 (predicted) and expected curve for NHE proton flux based on Eq. 15, normalized to the value in pH-6.8 K-based solution (Cha’s model). Results are means ± SEM. Note that the (predicted) normalized ΦH-NHE fluxes for individual fibers changes little if the Vm value is between −75 and −90 mV.
