Change search
ReferencesLink to record
Permanent link

Direct link
Virus shapes and buckling transitions in spherical shells
KTH, Superseded Departments, Physics.ORCID iD: 0000-0002-9881-7857
2003 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1063-651X, E-ISSN 1095-3787, Vol. 68, no 5Article in journal (Refereed) Published
Abstract [en]

We show that the icosahedral packings of protein capsomeres proposed by Caspar and Klug for spherical viruses become unstable to faceting for sufficiently large virus size, in analogy with the buckling instability of disclinations in two-dimensional crystals. Our model, based on the nonlinear physics of thin elastic shells, produces excellent one-parameter fits in real space to the full three-dimensional shape of large spherical viruses. The faceted shape depends only on the dimensionless Foppl-von Karman number gamma=YR2/kappa, where Y is the two-dimensional Young's modulus of the protein shell, kappa is its bending rigidity, and R is the mean virus radius. The shape can be parametrized more quantitatively in terms of a spherical harmonic expansion. We also investigate elastic shell theory for extremely large gamma, 10(3)

Place, publisher, year, edition, pages
2003. Vol. 68, no 5
Keyword [en]
bond-orientational order, icosahedral viruses, membranes, force, reconstruction, surfaces, vesicles, liquids, dna
URN: urn:nbn:se:kth:diva-23018DOI: 10.1103/PhysRevE.68.051910ISI: 000187183400047OAI: diva2:341716
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Lidmar, Jack
By organisation
In the same journal
Physical Review E. Statistical, Nonlinear, and Soft Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 11 hits
ReferencesLink to record
Permanent link

Direct link