Abstract
We describe the construction of a model complex of the cellobiohydrolase I (CBH I) cellulase from Trichoderma reesei bound to a cellulose microfibril in an aqueous environment for use in molecular dynamics (MD) simulations. Preliminary characterization from the initial phases of an MD simulation of this complex is also described. The linker sequence between the two globular domains was found to be quite flexible, and the oligosaccharides bound to this linker were found to prefer to be splayed like the spokes in a wheel due to their hydration requirements. The overall conformations of the two globular domains remained stable in the simulations, although both underwent changes in their orientations.
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Acknowledgements
This work was supported by subcontract XCO-4-33099-01 from the National Renewable Energy Laboratory funded by the U.S. DOE Office of the Biomass Program. The authors would like to thank the San Diego Supercomputer Center for providing the necessary computational resources and for their continued support of this project through their Strategic Applications Collaboration program. The authors also thank R.H. Atalla, J. Sugiyama WS, Adney, and D.B. Wilson, for helpful discussions.
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Zhong, L., Matthews, J.F., Crowley, M.F. et al. Interactions of the complete cellobiohydrolase I from Trichodera reesei with microcrystalline cellulose Iβ. Cellulose 15, 261–273 (2008). https://doi.org/10.1007/s10570-007-9186-0
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DOI: https://doi.org/10.1007/s10570-007-9186-0