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Relaxation Dispersion NMR Spectroscopy as a Tool for Detailed Studies of Protein Folding
University of Toronto, Ontario, Canada.
University of Toronto, Ontario, Canada.
University of Toronto, Ontario, Canada.
2009 (English)In: Biophysical Journal, ISSN 0006-3495, E-ISSN 1542-0086, Vol. 96, no 6, 2045-2054 p.Article in journal (Refereed) Published
Abstract [en]

Characterization of the mechanisms by which proteins fold into their native conformations is important not only for protein structure prediction and design but also because protein misfolding intermediates may play critical roles in fibril formation that are commonplace in neurodegenerative disorders. In practice, the study of folding pathways is complicated by the fact that for the most part intermediates are low-populated and short-lived so that biophysical studies are difficult. Due to recent methodological advances, relaxation dispersion NMR spectroscopy has emerged as a particularly powerful tool to obtain high-resolution structural information about protein folding events on the millisecond timescale. Applications of the methodology to study the folding of SH3 domains have shown that folding proceeds via previously undetected on-pathway intermediates, sometimes stabilized by nonnative long-range interactions. The relaxation dispersion approach provides a detailed kinetic and thermodynamic description of the folding process as well as the promise of obtaining an atomic level structural description of intermediate states. We review the concerted application of a variety of recently developed NMR relaxation dispersion experiments to obtain a "high-resolution" picture of the folding pathway of the A39V/N53P/V55L Fyn SH3 domain.

Place, publisher, year, edition, pages
Cell Press , 2009. Vol. 96, no 6, 2045-2054 p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-85033DOI: 10.1016/j.bpj.2008.12.3907OAI: diva2:563724
Available from: 2012-10-31 Created: 2012-10-31 Last updated: 2012-11-06

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Lundström, Patrik
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