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Type: Journal article
Title: The interaction of unfolding α-lactalbumin and malate dehydrogenase with the molecular chaperone αB-crystallin: a light and X-ray scattering investigation
Other Titles: The interaction of unfolding alpha-lactalbumin and malate dehydrogenase with the molecular chaperone alphaB-crystallin: a light and X-ray scattering investigation
Author: Regini, J.
Ecroyd, H.
Meehan, S.
Bremmell, K.
Clarke, M.
Lammie, D.
Wess, T.
Carver, J.
Citation: Molecular Vision, 2010; 16(260-62):2446-2456
Publisher: Molecular Vision
Issue Date: 2010
ISSN: 1090-0535
Statement of
Justyn W. Regini, Heath Ecroyd, Sarah Meehan, Kristen Bremmell, Matthew J. Clarke, Donna Lammie, Tim Wess, John A. Carver
Abstract: 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.
Keywords: Animals
Sus scrofa
Malate Dehydrogenase
alpha-Crystallin B Chain
Protein Structure, Quaternary
Scattering, Radiation
Protein Unfolding
Rights: © 2010 Molecular Vision
Grant ID: ARC
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Appears in Collections:Aurora harvest 5
Chemistry and Physics publications
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