5BR1:
reference: Structure of an ABC transporter solute-binding protein specific for the amino sugars glucosamine and galactosamine., Yadava U, Vetting MW, Al Obaidi N, Carter MS, Gerlt JA, Almo SC, Acta Crystallogr F Struct Biol Commun. 2016 Jun 1;72(Pt 6):467-72. doi:, 10.1107/S2053230X16007500. Epub 2016 May 23. PMID: 27303900

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