On the origin of the Boson peak in globular proteins

Details On the origin of the Boson peak in globular proteins On the origin of the Boson peak in globular proteins

2006-10-09

arxiv.org/abs/cond-mat/0610239v1

Physics

Condensed Matter

Soft Condensed Matter

Proceedings of the X International Workshop on Disordered Systems, Molveno (2006)

Scientific paper

10.1080/14786430601042369

We study the Boson Peak phenomenology experimentally observed in globular proteins by means of elastic network models. These models are suitable for an analytic treatment in the framework of Euclidean Random Matrix theory, whose predictions can be numerically tested on real proteins structures. We find that the emergence of the Boson Peak is strictly related to an intrinsic mechanical instability of the protein, in close similarity to what is thought to happen in glasses. The biological implications of this conclusion are also discussed by focusing on a representative case study.

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