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Figure 2.
Influence of the C-terminal truncation on the conformation of
the inner helix bundle gate. (A) Cα superposition of the
high-resolution truncated KcsA structure (1K4C; red ribbons)
with FL KcsA (blue ribbons). Inset highlights the splaying out
of the inner helix bundle gate between residues 110 and 115,
resulting in a 15° outward tilting. (B) Radius profile
(calculated with the program HOLE; ref. 29) of truncated (red)
and FL KcsA (blue).
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