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BP: Fachverband Biologische Physik
BP 19: Biosensors and Biofunctionalized Systems
BP 19.3: Talk
Wednesday, March 28, 2007, 16:00–16:15, H43
Impact of Peptide Structure on Semiconductor Binding — •Stefan Schnabel1, Simon Mitternacht2, Michael Bachmann1,2, Anders Irbäck2, and Wolfhard Janke1 — 1Institut für Theoretische Physik, University of Leipzig — 2Complex Systems Division, Lund University. Sweden
We applied simulated tempering and multicanonical Monte Carlo methods to an all-atom protein model to investigate the thermodynamical behavior of four selected peptides, each consisting of 12 residues, in aqueous solution. By recent experiments it is known that all of the four peptides tend to bind well at a GaAs surface, while only one shows good adhesion to Si. In the simulations we also observed a structural anomaly for this peptide. Since this difference is not induced by a different amino acid content, we conjecture that structural properties play an important role in the adhesion process and propose further experiments to verify this hypothesis.