Two configurations of a channel-forming membrane protein - PubMed (original) (raw)
. 1984 Feb;307(5952):609-13.
doi: 10.1038/307609a0.
- PMID: 6320017
- DOI: 10.1038/307609a0
Two configurations of a channel-forming membrane protein
P N Unwin et al. Nature. 1984 Feb.
Abstract
The protein oligomer forming the gap junction channel has been analysed in two Ca2+-sensitive states by electron microscopy of membranes in frozen aqueous solutions. Switching between states occurs by a small cooperative rearrangement involving tilting of the subunits, which may be responsible for the effect of Ca2+ on channel permeability in vivo.
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