1NOF:
reference: First crystallographic structure of a xylanase from glycoside hydrolase family 5: implications for catalysis., Larson SB, Day J, Barba de la Rosa AP, Keen NT, McPherson A, Biochemistry 2003 Jul 22;42(28):8411-22. PMID: 12859186

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