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Chitin‐binding domain of chitinase A1 (ChBDChiA1) is characteristic because it binds only to insoluble crystalline chitin. While binding sites of major carbohydrate‐binding modules carry multiple aromatic rings aligned on a surface, lethal mutations for ChBDChiA1 were reported only at W687, a location completely different from the site mentioned above, in spite of their similar main‐chain folds....
A chitinase is a hyperthermophilic glycosidase that effectively hydrolyzes both α and β crystalline chitins; that studied here was engineered from the genes PF1233 and PF1234 of Pyrococcus furiosus. This chitinase has unique structural features and contains two catalytic domains (AD1 and AD2) and two chitin-binding domains (ChBDs; ChBD1 and ChBD2). A partial enzyme carrying AD2 and ChBD2 also effectively...
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