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The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation
PURPOSE: The molecular chaperone αB-crystallin is found in high concentrations in the lens and is present in all major body tissues. Its structure and the mechanism by which it protects its target protein from aggregating and precipitating are not known. METHODS: Dynamic light scattering and X-ray s...
Autores principales: | , , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Molecular Vision
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2998715/ https://www.ncbi.nlm.nih.gov/pubmed/21152271 |
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author | Regini, Justyn W. Ecroyd, Heath Meehan, Sarah Bremmell, Kristen Clarke, Matthew J. Lammie, Donna Wess, Tim Carver, John A. |
author_facet | Regini, Justyn W. Ecroyd, Heath Meehan, Sarah Bremmell, Kristen Clarke, Matthew J. Lammie, Donna Wess, Tim Carver, John A. |
author_sort | Regini, Justyn W. |
collection | PubMed |
description | PURPOSE: The molecular chaperone αB-crystallin is found in high concentrations in the lens and is present in all major body tissues. Its structure and the mechanism by which it protects its target protein from aggregating and precipitating are not known. METHODS: Dynamic light scattering and X-ray solution scattering techniques were used to investigate structural features of the αB-crystallin oligomer when complexed with target proteins under mild stress conditions, i.e., reduction of α-lactalbumin at 37 °C and malate dehydrogenase when heated at 42 °C. In this investigation, the size, shape and particle distribution of the complexes were determined in real-time following the induction of stress. RESULTS: Overall, it is observed that the mass distribution, hydrodynamic radius, and spherical shape of the αB-crystallin oligomer do not alter significantly when it complexes with its target protein. CONCLUSIONS: The data are consistent with the target protein being located in the outer protein shell of the αB-crystallin oligomer where it is readily accessible for possible refolding via the action of other molecular chaperones. |
format | Text |
id | pubmed-2998715 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Molecular Vision |
record_format | MEDLINE/PubMed |
spelling | pubmed-29987152010-12-08 The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation Regini, Justyn W. Ecroyd, Heath Meehan, Sarah Bremmell, Kristen Clarke, Matthew J. Lammie, Donna Wess, Tim Carver, John A. Mol Vis Research Article PURPOSE: The molecular chaperone αB-crystallin is found in high concentrations in the lens and is present in all major body tissues. Its structure and the mechanism by which it protects its target protein from aggregating and precipitating are not known. METHODS: Dynamic light scattering and X-ray solution scattering techniques were used to investigate structural features of the αB-crystallin oligomer when complexed with target proteins under mild stress conditions, i.e., reduction of α-lactalbumin at 37 °C and malate dehydrogenase when heated at 42 °C. In this investigation, the size, shape and particle distribution of the complexes were determined in real-time following the induction of stress. RESULTS: Overall, it is observed that the mass distribution, hydrodynamic radius, and spherical shape of the αB-crystallin oligomer do not alter significantly when it complexes with its target protein. CONCLUSIONS: The data are consistent with the target protein being located in the outer protein shell of the αB-crystallin oligomer where it is readily accessible for possible refolding via the action of other molecular chaperones. Molecular Vision 2010-11-18 /pmc/articles/PMC2998715/ /pubmed/21152271 Text en Copyright © 2010 Molecular Vision. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Regini, Justyn W. Ecroyd, Heath Meehan, Sarah Bremmell, Kristen Clarke, Matthew J. Lammie, Donna Wess, Tim Carver, John A. The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title | The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title_full | The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title_fullStr | The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title_full_unstemmed | The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title_short | The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation |
title_sort | interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αb-crystallin: a light and x-ray scattering investigation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2998715/ https://www.ncbi.nlm.nih.gov/pubmed/21152271 |
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