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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Insights on the structural dynamics of Leishmania braziliensis Hsp90 molecular chaperone by small angle X-ray scattering

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Author(s):
Seraphim, Thiago V. ; Silva, Kelly P. ; Dores-Silva, Paulo R. ; Barbosa, Leandro R. S. ; Borges, Julio C.
Total Authors: 5
Document type: Journal article
Source: International Journal of Biological Macromolecules; v. 97, p. 503-512, APR 2017.
Web of Science Citations: 6
Abstract

Heat shock protein of 90 kDa (Hsp90) is an essential molecular chaperone involved in a plethora of cellular activities which modulate protein homeostasis. During the Hsp90 mechanochemical cycle, it undergoes large conformational changes, oscillating between open and closed states. Although structural and conformational equilibria of prokaryotic and some eukaryotic Hsp90s are known, some protozoa Hsp90 structures and dynamics are poorly understood. In this study, we report the solution structure and conformational dynamics of Leishmania braziliensis Hsp90 (LbHsp90) investigated by small angle X-ray scattering (SAXS). The results indicate that LbHsp90 coexists in open and closed conformations in solution and that the linkers between domains are not randomly distributed. These findings noted interesting features of the LbHsp90 system, opening doors for further conformational studies of other protozoa chaperones. (C) 2017 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 14/07206-6 - Studies of the mitochondrial HSP70 of human and protozoa: structural and functional approaches
Grantee:Julio Cesar Borges
Support type: Regular Research Grants
FAPESP's process: 12/50161-8 - Study of the structure and function of the Hsp90 chaperone with emphasis on its role in cellular homeostasis
Grantee:Carlos Henrique Inacio Ramos
Support type: Research Projects - Thematic Grants
FAPESP's process: 11/23110-0 - Using isothermal titration calorimetry for the determination of thermodynamic properties of protein-ligand and protein-protein interactions
Grantee:Julio Cesar Borges
Support type: Regular Research Grants