CHAPTER 18
MEMBRANE POTENTIALS
399
(a)
KcsA
MscL
(b)
(c)
20 A °
(d)
Figure 18.8 Structures of two ion channels. (a,c) The KcsA potassium channel, and (b,d) the
MscL mechanosensitive channel. Roderick McKinnon won the Nobel Prize in Chemistry in 2003
for his structural studies on ion channels.
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