1TM6:
reference: NMR structure of the C-terminal domain of SecA in the free state., Matousek WM, Alexandrescu AT, Biochim Biophys Acta 2004 Nov 1;1702(2):163-71. PMID: 15488768

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).