General Comments on membrane proteins A. Classes of membrane proteins 1. Receptors - signal transduction 2. 1opf is E. coli structure. A. channels in outer membrane of bacteria that allow polar solutes to enter cell into periplasmic space. D. structure solved by Georg Schulz in 1992 in Rhodobacter and shortly thereafter by Jansonius in E. coli.
Display strands to highlight trimeric pore structure.
Rotation of molecule highlights 16-18 strands per barrel. Script 5 - shows occluded pore. Script 6 - binding of ferrichrome causes interactions on cytoplasmic side to open pore.