4TKO:
reference: Structure of the periplasmic adaptor protein from a major facilitator superfamily (MFS) multidrug efflux pump., Hinchliffe P, Greene NP, Paterson NG, Crow A, Hughes C, Koronakis V, FEBS Lett. 2014 Jul 1. pii: S0014-5793(14)00519-5. doi:, 10.1016/j.febslet.2014.06.055. PMID: 24996185

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