4UOJ:
reference: Insights Into Structure and Function of Fungal beta-mannosidases from Glycoside Hydrolase Family 2 Based on Multiple Crystal Structures of T. harzianum Enzyme., Nascimento AS, Muniz JR, Aparicio R, Golubev AM, Polikarpov I, FEBS J. 2014 Jun 26. doi: 10.1111/febs.12894. PMID: 24975648

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