4WCJ:
reference: Structural basis for the de-N-acetylation of poly-beta-1,6-N-acetyl-D-glucosamine in Gram-positive bacteria., Little DJ, Bamford NC, Podrovskaya V, Robinson H, Nitz M, Howell PL, J Biol Chem. 2014 Oct 30. pii: jbc.M114.611400. PMID: 25359777

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