2011/03/21 by M. Baiesi, Marco Baiesi, E. Orlandini +5 · 18 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Engineering · Mathematics · Physics and Astronomy · #Chemistry #Combinatorics #Delocalized electron #Electrostatics and Colloid Interactions #Geometry #Globular cluster #Globular protein #Materials science #Mathematics #Nanopore #Nanopore and Nanochannel Transport Studies #Nanotechnology #Nuclear magnetic resonance #Physics #Polymer #Polymer physics #Power law #Protein Structure and Dynamics #Quantum mechanics #Ring (chemistry) #Slipping #Statistics #Topology (electrical circuits) #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.106.258301
published in Physical Review Letters 106(25), 258301 (American Physical Society) · 4 pages, 5 figures
arxiv created 2011/03/21 · openalex publication_date 2011/06/24 · arxiv updated 2011/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Simulations in which a globular ring polymer with delocalized knots is separated in two interacting loops by a slipping link, or in two noninteracting globuli by a wall with a hole, show how the minimal crossing number of the knots controls the equilibrium statistics. With slipping link the ring length is divided between the loops according to a simple law, but with unexpectedly large fluctuations. These are suppressed only for unknotted loops, whose length distribution always shows a fast power-law decay. We also discover and explain a topological effect interfering with that of surface tension in the globule translocation through a membrane nanopore.