| Autor: |
Sergei B. Rochal, Olga V. Konevtsova, Daria S. Roshal, Anže Božič, Ivan Yu. Golushko, Rudolf Podgornik |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Nanoscale advances. 4(21) |
| ISSN: |
2516-0230 |
| Popis: |
Understanding the principles of protein packing and the mechanisms driving morphological transformations in virus shells (capsids) during their maturation can be pivotal for the development of new antiviral strategies. Here, we study how these principles and mechanisms manifest themselves in icosahedral viral capsids assembled from identical symmetric structural units (capsomeres). To rationalize such shells, we model capsomers as symmetrical groups of identical particles interacting with a short-range potential typical of the classic Tammes problem. The capsomere particles are assumed to retain their relative positions on the vertices of planar polygons placed on the spherical shell and to interact only with the particles from other capsomeres. Minimization of the interaction energy enforces equal distances between the nearest particles belonging to neighboring capsomeres and minimizes the number of different local environments. Thus, our model implements the Caspar and Klug quasi-equivalence principle and leads to packings strikingly similar to real capsids. We then study a reconstruction of protein trimers into dimers in a |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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