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Loukas Petridis, PhD
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Loukas Petridis PhD

Post-doctoral Research Fellow

Center for Molecular Biophysics
Oak Ridge National Laboratory
Build 6011, MS 6309

Oak Ridge , TN 37831
Work: (865) 576-2576

Biography:

Current research

 

Loukas is currently investigating at a molecular level aspects of biomass recalcitrance , the natural resistance of plant cell walls to enzymatic degradation. Biomass recalcitrance is the bottleneck in the production of sustainable biofuels. Biomass recalcitrance is attributed mainly to two factors, the crystalline nature of cellulose and the presence of lignin (mainly), hemicellulose and pectins that coat the cellulose fibrils.

As a first step, a CHARMM force field has been created for lignin (Petridis & Smith, 2008, J Comp Chem). Lignin topologies and 3D structures were generated and Molecular Dynamics simulations performed.  Results pf the simulations are compared with Small Angle Neutron Scattering experiments to verify the applicability of the initial models.

 

Biography

 

Loukas was born in Athens, Greece and read Natural Sciences in the University of Cambridge, UK and then continued to obtain his PhD under the supervision of Prof Eugene Terentjiev. His work involved the theoretical study of phase transitions in Nematic Elastomers. He then moved to join Prof Jeremy Smith's lab in Oak Ridge, where he is examining at a molecular level some aspects of biomass recalcitrance, the natural resistance of plant cell walls to enzymatic degradation.
 

Publications

 

5 R. Shulz, B. Lindner, L. Petridis and J.C. Smith (2009); Scaling of Multimillion-atom Biological Molecular Dynamics Simulation on a Petascale Supercomputer; Journal of Chemical Theory and Computation 2009 5 (10), 2798-2808 (DOI: 10.1021/ct900292r)

L. Petridis and J.C. Smith (2009); A molecular mechanics force field for lignin; Journal of Computational Chemistry 30 457-467

L. Petridis and J.C. Smith (2008); Cellulosic ethanol: progress towards a simulation model of lignocellulosic biomass; Journal of Physics: Conference Series 125 (2008) 012055

L. Petridis and E. M. Terentjev (2006); Nematic-isotropic transition with quenched disorder; Physical Review E 74 1539-3755

L. Petridis and E. M. Terentjev (2006); Quenched disorder and spin-glass correlations in XY nematics; Journal of Physics A-Mathematical and General 39 9693-9708

Contact

Administrative Assistant

Julia B. Cooper


Tel.: +1 865 574 6308

Fax.: +1 865 576 7651

email: cooperjb@ornl.gov