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Authors: Claudio Alexandre Piedade ; António E. N. Ferreira and Carlos Cordeiro

Affiliation: Universidade de Lisboa, Portugal

ISBN: 978-989-758-214-1

ISSN: 2184-4305

Keyword(s): Virus, Capsid Disassembly, Combinatorial Geometry, Symmetry Groups, Structural Biology.

Related Ontology Subjects/Areas/Topics: Bioinformatics ; Biomedical Engineering ; Computational Molecular Systems ; Structural Bioinformatics ; Structural Variations

Abstract: In contrast with the assembly process of virus particles, which has been the focus of many experimental and theoretical studies, the disassembly of virus protein capsids, a key event during infection, has generally been overlooked. Although the nature of the intracellular triggers that promote subunit disassembly may be diverse, here we postulate that the order of subunit removal is mainly determined by each virus structural geometry and the strength of subunit interactions. Following this assumption, we modelled the early stages of virus disassembly of T =1 icosahedral viruses, predicting the sequence of removal of up to five subunits in a sample of 51 structures. We used combinatorics and geometry, to find non-geometrically identical capsid fragments and estimated their energy by three different heuristics based on the number of weak inter-subunit contacts. We found a main disassembly pathway common to a large group of viruses consisting of the removal of a triangular trimer. Densov iruses lose a square-shaped tetramer while Human Adenoviruses lose a pentagonshaped pentamer. Results were virtually independent of the heuristic measure used. These findings suggest that particular subunit interactions might be an important target for novel antiviral drugs designed to interfere with capsid disassembly. (More)

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Paper citation in several formats:
Piedade, C.; Ferreira, A. and Cordeiro, C. (2017). How to Disassemble a Virus Capsid - A Computational Approach. In Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 3: BIOINFORMATICS, (BIOSTEC 2017) ISBN 978-989-758-214-1 ISSN 2184-4305, pages 217-222. DOI: 10.5220/0006249802170222

@conference{bioinformatics17,
author={Claudio Alexandre Piedade. and António E. N. Ferreira. and Carlos Cordeiro.},
title={How to Disassemble a Virus Capsid - A Computational Approach},
booktitle={Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 3: BIOINFORMATICS, (BIOSTEC 2017)},
year={2017},
pages={217-222},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006249802170222},
isbn={978-989-758-214-1},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 3: BIOINFORMATICS, (BIOSTEC 2017)
TI - How to Disassemble a Virus Capsid - A Computational Approach
SN - 978-989-758-214-1
IS - 2184-4305
AU - Piedade, C.
AU - Ferreira, A.
AU - Cordeiro, C.
PY - 2017
SP - 217
EP - 222
DO - 10.5220/0006249802170222

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