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BP: Fachverband Biologische Physik

BP 16: Poster Session I

BP 16.19: Poster

Dienstag, 27. März 2007, 17:00–19:30, Poster D

Solution Behavior of Semiconductor-Binding Peptides — •Stefan Schnabel¹, Simon Mitternacht², Michael Bachmann^1,2, Anders Irbäck², and Wolfhard Janke¹ — ¹Institut für Theoretische Physik, University of Leipzig — ²Complex Systems Division, Lund University, Sweden

Recent experiments have identified peptides with adhesion affinity for GaAs and Si surfaces. Here we use all-atom Monte Carlo (MC) simulations with implicit solvent to investigate the behavior in aqueous solution for four such peptides, all with 12 residues. At room temperature, we observe that all the four peptides are largely unstructured, which is consistent with experimental data. At the same time, it turns out that one of the peptides is structurally different and more flexible, compared to the others. This finding points at structural differences as a possible explanation for varying adhesion properties of the four peptides. An experimental test of this hypothesis is proposed.