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The properties of catalytically-inactivated Trichoderma reesei cellobiohydrolase I: Role of the cellulose binding domain

Conference ·
OSTI ID:141959
; ;  [1]
  1. Oak Ridge National Lab., TN (United States)
Cellobiohydrolase I (CBH I) was purified from a crude cellulase by preparative isoelectric focusing. Treatment of CBH I with 1-ethyl-3-3(3-dimethylaminopropyl)-carbodiimide (EDC) resulted in its catalytic inactivation but did not abolish its ability to be absorbed to microcrystalline cellulose (Avicel). CBH I thus modified possessed a pI of between 8.5 and 9.3 and decreased tryptophan fluorescence compared to native CBH I. A comparison of the effect of native and modified CBH I on the morphology of crystalline cotton cellulose fibers was made using scanning electron microscopy.
DOE Contract Number:
AC05-84OR21400
OSTI ID:
141959
Report Number(s):
CONF-930304--
Country of Publication:
United States
Language:
English