Figure 2.
Figure 2: Stereo view of electron density in the region of the
K+ channel selectivity filter. The 2F[o] - F[c] electron
density map (contoured at 2 )
covers amino acids forming the selectivity filter (two
diagonally opposed subunits are shown), with K+ ions (green
spheres) along the ion pathway, and water molecules (red
spheres) in the vicinity.
The above figure is reprinted
by permission from Macmillan Publishers Ltd:
Nature
(2001,
414,
43-48)
copyright 2001.
)
covers amino acids forming the selectivity filter (two
diagonally opposed subunits are shown), with K+ ions (green
spheres) along the ion pathway, and water molecules (red
spheres) in the vicinity.