Crystal Structure of AqpZ Tetramer Reveals Two Distinct Arg-189 Conformations Associated with Water Permeation through the Narrowest Constriction of the Water-conducting Channel.
Jiang, J., Daniels, B.V., Fu, D.(2006) J.Biol.Chem. 281: 454-460
- PubMed: 16239219 
- DOI: 10.1074/jbc.M508926200
- PubMed Abstract: 
AqpZ is a homotetramer of four water-conducting channels that facilitate rapid water movements across the plasma membrane of Escherichia coli. Here we report a 3.2 angstroms crystal structure of the tetrameric AqpZ (tAqpZ). All channel-lining residue ...