Ion channels in single bilayers induced by rat connexin32

Brain Res Mol Brain Res. 1992 Oct;15(3-4):269-80. doi: 10.1016/0169-328x(92)90118-u.


The gap junction channel mediates an important form of intercellular communication, but its detailed study is hindered by inaccessibility in situ. We show here that connexin32, the major protein composing junctional channels in rat liver, forms ion channels in single bilayer membranes. The properties of these reconstituted connexin32 channels are characterized and compared with those of gap junction channels. The demonstration that connexin32 forms channels in single membranes has implications for assembly and regulation of junctional channels, and permits detailed study of the gating, permeability and modulation of this channel-forming protein.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Blotting, Western
  • Connexins
  • Electric Conductivity
  • Intercellular Junctions / drug effects*
  • Ion Channels / drug effects*
  • Lipid Bilayers*
  • Membrane Proteins / pharmacology*
  • Permeability / drug effects
  • Phospholipids / physiology*
  • Rats
  • Sucrose / pharmacokinetics


  • Connexins
  • Ion Channels
  • Lipid Bilayers
  • Membrane Proteins
  • Phospholipids
  • Sucrose