Figure 5.
![Figure 5. (A) Apparent (Iapp,100) and (B) true single-channel IV curves of MaxiK with different luminal K+/Tl+ mixtures (pipette). The Tl+ concentrations are attached to the curves with [Tl+] + [K+] = 150 mM. (C). Apparent IV curves obtained with cytosolic K+/Tl+ mixtures (bath). Besides in the region of the negative slope at positive potentials, Iapp and Itrue are identical.](https://cdn.rupress.org/rup/content_public/journal/jgp/131/4/10.1085_jgp.200809956/7/jgp_200809956_lw_fig5.jpeg?Expires=1767710471&Signature=B-fyG80ScJuoWol~45TilTlTtOErpk6bi1hOappPYIpmqKunmPoAToJ0elB8jfJDyw-ioaLhbNQHJnWFspmapGHVmE9j533MgQcckvEw19t-NuV8e2q~CVLoSzq5qzd5vY2kFMs51O-KWcgcgsyVDUz0F-qHzXL~gau5HhmYG8QspWGU8qWIUxhe77AQXbRmmAYt3N9AbKA3ArLQErtHBC0iRRYHr1Q1Mjg14C6bs1u7cC8j~x~CzGKtUcDC3rqEfbpm7EbLPG0q9s6iNRHALdecuXtMk3~lgD81QZQ4oKDa~OAouyPj2ncP1d6OBJSAtVzVLecsEmQHzUny6K-yVA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
(A) Apparent (Iapp,100) and (B) true single-channel IV curves of MaxiK with different luminal K+/Tl+ mixtures (pipette). The Tl+ concentrations are attached to the curves with [Tl+] + [K+] = 150 mM. (C). Apparent IV curves obtained with cytosolic K+/Tl+ mixtures (bath). Besides in the region of the negative slope at positive potentials, Iapp and Itrue are identical.
