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Carbohydr Res. 2013 Jun 7;374:96-102. doi: 10.1016/j.carres.2013.04.001. Epub 2013 Apr 11.

Molecular dynamics study of carbohydrate binding module mutants of fungal cellobiohydrolases.

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  • 1Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Gakuen-kibanadai, Miyazaki, Japan.


The present study reports the systematic survey of binding free energies at the interface between a carbohydrate-binding module (CBM) and a cellulose Iα crystal model using molecular dynamics' calculations. The two wild type CBMs (Cel7A CBM and Cel6A CBM) have been studied, as well as seven mutants of Cel7A CBM. A comparison of the experimental data for the two wild type and the four mutants CBMs (i.e., Y5A, Y5W, N29A, and Q34A) revealed that the interaction energies of Y5W and Q34A were larger than that of the wild type Cel7A CBM, whereas Y5A and N29A gave smaller values. These predicted values of the interaction energies were compared with the results observed for the adsorbing behaviors of the CBMs.

Copyright © 2013 Elsevier Ltd. All rights reserved.

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