Figure 2.
Fig. 2. Structure of the selectivity filter of KcsA^D-Ala77 in
the presence of high [K^+]. (A) Stereo view of the electron
density of the selectivity filter of KcsA^D-Ala77. The 2F[obs]
– F[calc] electron density map contoured at 2.0 for the
diagonally opposite subunits is shown. (B) Structure of the
selectivity filter of KcsA^D-Ala77 in high [K^+] represented as
in Fig. 1. (C) Superposition of the selectivity filter of
KcsA^D-Ala77 (blue) and the wild-type KcsA channel (red) in the
presence of high [K^+].
for the
diagonally opposite subunits is shown. (B) Structure of the
selectivity filter of KcsA^D-Ala77 in high [K^+] represented as
in Fig. 1. (C) Superposition of the selectivity filter of
KcsA^D-Ala77 (blue) and the wild-type KcsA channel (red) in the
presence of high [K^+].