Document Detail


Metastable tight knots in a wormlike polymer.
MedLine Citation:
PMID:  18233259     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Based on an estimate of the knot entropy of a wormlike chain we predict that the interplay of bending energy and confinement entropy will result in a compact metastable configuration of the knot that will diffuse, without spreading, along the contour of the semiflexible polymer until it reaches one of the chain ends. Our estimate of the size of the knot as a function of its topological invariant (ideal aspect ratio) agrees with recent experimental results of knotted dsDNA. Further experimental tests of our ideas are proposed.
Authors:
Alexander Y Grosberg; Yitzhak Rabin
Related Documents :
22555779 - Prenatal diagnosis of criss-cross heart: sonographical and pathological features of fiv...
24456979 - Development: the maternal-zygotic transition revisited.
16911179 - Characteristics of nausea and vomiting in pregnant japanese women.
7080089 - Toxic effects of chromic sulphate on the common carp, cyprinus carpio.
25126869 - Malondialdehyde and antioxidant enzymes in second and third trimesters of pre-eclamptic...
16378449 - Cobalt sorption in silica-pillared clays.
7651739 - Altered specificity of igf2 promoter imprinting during fetal development and onset of w...
4076249 - An aetiological study of the vacterl-association.
20664439 - Diagnosis and management of pancreatic carcinoma during pregnancy.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-11-20
Journal Detail:
Title:  Physical review letters     Volume:  99     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2007 Nov 
Date Detail:
Created Date:  2008-01-31     Completed Date:  2008-05-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  217801     Citation Subset:  IM    
Affiliation:
Department of Physics, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
DNA / chemistry
Entropy
Models, Chemical*
Molecular Conformation
Polymers / chemistry*
Chemical
Reg. No./Substance:
0/Polymers; 9007-49-2/DNA

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Strain control of domain-wall stability in epitaxial BiFeO3 (110) films.
Next Document:  Dynamics of nearly spherical vesicles in an external flow.