K A Williams
Williams K, Geldmacher Kaufer U, Padan E, Schuldiner S, Kuhlbrandt W. Projection structure of NhaA, a secondary transporter from Escherichia coli, at 4.0 A resolution. EMBO J. 1999;18:3558-63 pubmed
..Two crystal forms with p22121 symmetry show tightly packed dimers of NhaA which differ in the interactions between adjacent dimers. This work provides the first direct glimpse into the structure of a secondary transporter. ..
Williams K. Three-dimensional structure of the ion-coupled transport protein NhaA. Nature. 2000;403:112-5 pubmed
..The molecular organization of NhaA represents a new membrane-protein structural motif and offers the first insights into the architecture of an ion-coupled transport protein. ..