1CHK:
reference: X-ray structure of an anti-fungal chitosanase from streptomyces N174., Marcotte EM, Monzingo AF, Ernst SR, Brzezinski R, Robertus JD, Nat Struct Biol 1996 Feb;3(2):155-62. PMID: 8564542

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