Gap Junction (communicating junction) Structure: o the smallest gap of 2-3nm 冷 connexons(连接小体) consist of protein Connexin 79nm in diameter b 6-subunits of proteins- connexin Cylinder of 6 connexin subunits gap 2nm channel: hydrophilic channel Cytosol Function: provide a pathway between cells Membrane Transmembrane a helices26 Structure: ❖ the smallest gap of 2-3 nm ❖ connexons(连接小体): • consist of protein • 7~9nm in diameter • 6-subunits of proteins- connexin • 2nm channel: hydrophilic channel Function: provide a pathway between cells Gap Junction (communicating junction)