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dc.contributor.author
Echave, Julian
dc.date.available
2023-04-24T13:19:30Z
dc.date.issued
2012-02
dc.identifier.citation
Echave, Julian; Why are the low-energy protein normal modes evolutionarily conserved?; Int Union Pure Applied Chemistry; Pure and Applied Chemistry; 84; 9; 2-2012; 1931-1937
dc.identifier.issn
0033-4545
dc.identifier.uri
http://hdl.handle.net/11336/195117
dc.description.abstract
Proteins fluctuate, and such fluctuations are functionally important. As with any functionally relevant trait, it is interesting to study how fluctuations change during evolution. In contrast with sequence and structure, the study of the evolution of protein motions is much more recent. Yet, it has been shown that the overall fluctuation pattern is evolutionarily conserved. Moreover, the lowest-energy normal modes have been found to be the most conserved. The reasons behind such a differential conservation have not been explicitly studied. There are two limiting explanations. A "biological"explanation is that because such modes are functional, there is natural selection pressure against their variation. An alternative "physical" explanation is that the lowest-energy normal modes may be more conserved because they are just more robust with respect to random mutations. To investigate this issue, I studied a set of globin-like proteins using a perturbed elastic network model (ENM) of the effect of random mutations on normal modes. I show that the conservation predicted by the model is in excellent agreement with observations. These results support the physical explanation: the lowest normal modes are more conserved because they are more robust.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Int Union Pure Applied Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CHEMICAL PHYSICS
dc.subject
COMPUTER MODELING
dc.subject
MOLECULAR DYNAMICS
dc.subject
NORMAL MODES
dc.subject
PROTEIN DYNAMICS
dc.subject
PROTEIN EVOLUTION
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Why are the low-energy protein normal modes evolutionarily conserved?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-04-19T15:01:34Z
dc.journal.volume
84
dc.journal.number
9
dc.journal.pagination
1931-1937
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Echave, Julian. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Pure and Applied Chemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1351/PAC-CON-12-02-15
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/document/doi/10.1351/PAC-CON-12-02-15/html
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