Volume 88, Issue 12 pp. 1675-1687
RESEARCH ARTICLE

Identification of potential allosteric binding sites in cathepsin K based on intramolecular communication

Gisele V. Rocha

Gisele V. Rocha

Programa de Computação Científica, Vice-Presidência de Educação, Informação e Comunicação, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil

Laboratoire de Biologie et de Pharmacologie Appliquée, Ecole Normale Supérieure Paris Saclay, Centre National de la Recherche Scientifique, Cachan, France

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Leonardo S. Bastos

Leonardo S. Bastos

Programa de Computação Científica, Vice-Presidência de Educação, Informação e Comunicação, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil

Department of Infectious Diseases Epidemiology, London School of Hygiene and Tropical Medicine, London, UK

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Mauricio G. S. Costa

Corresponding Author

Mauricio G. S. Costa

Programa de Computação Científica, Vice-Presidência de Educação, Informação e Comunicação, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil

Laboratoire de Biologie et de Pharmacologie Appliquée, Ecole Normale Supérieure Paris Saclay, Centre National de la Recherche Scientifique, Cachan, France

Correspondence

Mauricio G. S. Costa, Programa de Computação Científica, Vice-Presidência de Educação, Informação e Comunicação, Fundação Oswaldo Cruz. Av. Brasil 4365, Rio de Janeiro 21040-222, Brazil.

Email: [email protected]

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First published: 18 July 2020
Citations: 3

Funding information: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Abstract

Network theory methods and molecular dynamics (MD) simulations are accepted tools to study allosteric regulation. Indeed, dynamic networks built upon correlation analysis of MD trajectories provide detailed information about communication paths between distant sites. In this context, we aimed to understand whether the efficiency of intramolecular communication could be used to predict the allosteric potential of a given site. To this end, we performed MD simulations and network theory analyses in cathepsin K (catK), whose allosteric sites are well defined. To obtain a quantitative measure of the efficiency of communication, we designed a new protocol that enables the comparison between properties related to ensembles of communication paths obtained from different sites. Further, we applied our strategy to evaluate the allosteric potential of different catK cavities not yet considered for drug design. Our predictions of the allosteric potential based on intramolecular communication correlate well with previous catK experimental and theoretical data. We also discuss the possibility of applying our approach to other proteins from the same family.

CONFLICT OF INTEREST

The authors declare no conflict of interest.

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