Danielsson Ulf H, Lundgren Martin, Niemi Antti J
Department of Physics and Astronomy, Uppsala University, Sweden.
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Aug;82(2 Pt 1):021910. doi: 10.1103/PhysRevE.82.021910. Epub 2010 Aug 11.
We combine the principle of gauge invariance with extrinsic string geometry to develop a lattice model that can be employed to theoretically describe properties of chiral, unbranched homopolymers. We find that in its low temperature phase the model is in the same universality class with proteins that are deposited in the Protein Data Bank, in the sense of the compactness index. We apply the model to analyze various statistical aspects of folded proteins. Curiously we find that it can produce results that are a very good good match to the data in the Protein Data Bank.
我们将规范不变性原理与外在弦几何相结合，开发出一种晶格模型，该模型可用于从理论上描述手性无支链均聚物的性质。我们发现，在其低温相中，就紧凑性指数而言，该模型与存于蛋白质数据库中的蛋白质属于同一普适类。我们应用该模型来分析折叠蛋白质的各种统计方面。奇怪的是，我们发现它能产生与蛋白质数据库中的数据非常吻合的结果。
