The polydispersity of αb-crystallin is rationalized by an interconverting polyhedral architecture

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Abstract

We report structural models for the most abundant oligomers populated by the polydisperse molecular chaperone αB-crystallin. Subunit connectivity is determined by using restraints obtained from nuclear magnetic resonance spectroscopy and mass spectrometry measurements, enabling the construction of various oligomeric models. These candidate structures are filtered according to their correspondence with ion-mobility spectrometry data and cross-validated by using electron microscopy. The ensuing best-fit structures reveal the polyhedral architecture of αB-crystallin oligomers, and provide a rationale for their polydispersity and facile interconversion. © 2011 Elsevier Ltd All rights reserved.

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Baldwin, A. J., Lioe, H., Hilton, G. R., Baker, L. A., Rubinstein, J. L., Kay, L. E., & Benesch, J. L. P. (2011). The polydispersity of αb-crystallin is rationalized by an interconverting polyhedral architecture. Structure, 19(12), 1855–1863. https://doi.org/10.1016/j.str.2011.09.015

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