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Sorzano COS, Martín-Ramos A, Prieto F, Melero R, Martín-Benito J, Jonic S, Navas-Calvente J, Vargas J, Otón J, Abrishami V, de la Rosa-Trevín JM, Gómez-Blanco J, Vilas JL, Marabini R, Carazo JM. Local analysis of strains and rotations for macromolecular electron microscopy maps. J Struct Biol 2016; 195:123-8. [PMID: 27102900 DOI: 10.1016/j.jsb.2016.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/01/2016] [Accepted: 04/06/2016] [Indexed: 01/23/2023]
Abstract
Macromolecular complexes perform their physiological functions by local rearrangements of their constituents and biochemically interacting with their reaction partners. These rearrangements may involve local rotations and the induction of local strains causing different mechanical efforts and stretches at the different areas of the protein. The analysis of these local deformations may reveal important insight into the way proteins perform their tasks. In this paper we introduce a method to perform this kind of local analysis using Electron Microscopy volumes in a fully objective and automatic manner. For doing so, we exploit the continuous nature of the result of an elastic image registration using B-splines as its basis functions. We show that the results obtained by the new automatic method are consistent with previous observations on these macromolecules.
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Affiliation(s)
- C O S Sorzano
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain; Univ. San Pablo - CEU, Campus Urb. Montepríncipe, 28668 Boadilla del Monte, Madrid, Spain.
| | - A Martín-Ramos
- Univ. San Pablo - CEU, Campus Urb. Montepríncipe, 28668 Boadilla del Monte, Madrid, Spain
| | - F Prieto
- Univ. San Pablo - CEU, Campus Urb. Montepríncipe, 28668 Boadilla del Monte, Madrid, Spain
| | - R Melero
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - J Martín-Benito
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - S Jonic
- IMPMC, Sorbonne Universités - CNRS UMR 7590, UPMC University Paris 6, MNHN, IRDUMR206, 75005 Paris, France
| | - J Navas-Calvente
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - J Vargas
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - J Otón
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - V Abrishami
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | | | - J Gómez-Blanco
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - J L Vilas
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
| | - R Marabini
- Univ. Autónoma de Madrid, 28049 Cantoblanco, Madrid, Spain
| | - J M Carazo
- Centro Nac. Biotecnología (CSIC), c/Darwin, 3, 28049 Cantoblanco, Madrid, Spain
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