2XTY:
reference: Structure of QnrB1, a plasmid-mediated fluoroquinolone resistance factor., Vetting MW, Hegde SS, Wang M, Jacoby GA, Hooper DC, Blanchard JS, J Biol Chem. 2011 May 19. PMID: 21597116

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