Scaling of Linking and Writhing Numbers for Spherically Confined and Topologically Equilibrated Flexible Polymers [0.03%]
球形受限拓扑平衡柔性聚合物的链环数和缠绕数标度关系
John F Marko
John F Marko
Scaling laws for Gauss linking number Ca and writhing number Wr for spherically confined flexible polymers with thermally fluctuating topology are analyzed. For ideal (phantom) polymers each of N segments of length unity confined to a spher...
Quantifying information transmission in eukaryotic gradient sensing and chemotactic response [0.03%]
量化量化真核生物梯度感应及趋化反应中的信息传输
Bo Hu,Wen Chen,Herbert Levine et al.
Bo Hu et al.
Eukaryotic cells are able to sense shallow chemical gradients by surface receptors and migrate toward chemoattractant sources. The accuracy of this chemotactic response relies on the ability of cells to infer gradients from the heterogeneou...
Protrusion of a Virtual Model Lamellipodium by Actin Polymerization: A Coarse-grained Langevin Dynamics Model [0.03%]
基于粗粒化朗之万动力学模型的虚拟细胞伪足突起模拟：文氏法研究细胞伪足的突出机制
Junhwan Jeon,Nelson R Alexander,Alissa M Weaver et al.
Junhwan Jeon et al.
We report the development of a coarse-grained Langevin dynamics model of a lamellipodium featuring growing F-actin filaments in order to study the effect of stiffness of the F-actin filament, the G-actin monomer concentration, and the numbe...
Yuri Bakhtin,Christine Heitsch
Yuri Bakhtin
We consider large random trees under Gibbs distributions and prove a Large Deviation Principle (LDP) for the distribution of degrees of vertices of the tree. The LDP rate function is given explicitly. An immediate consequence is a Law of La...
A Mogilner,D W Verzi
A Mogilner
We develop a one-dimensional physical model of the crawling movement of simple cells: The sperm of a nematode, Ascaris suum. The model is based on the assumptions that polymerization and bundling of the cytoskeletal filaments generate the f...