1DYS:
reference: Structure and function of Humicola insolens family 6 cellulases: structure of the endoglucanase, Cel6B, at 1.6 A resolution., Davies GJ, Brzozowski AM, Dauter M, Varrot A, Schulein M, Biochem J 2000 May 15;348 Pt 1:201-7. PMID: 10794732

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