3KLN:
reference: Vibrio cholerae VpsT regulates matrix production and motility by directly sensing cyclic di-GMP., Krasteva PV, Fong JC, Shikuma NJ, Beyhan S, Navarro MV, Yildiz FH, Sondermann H, Science. 2010 Feb 12;327(5967):866-8. PMID: 20150502

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