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NMR relaxation unravels interdomain crosstalk of the two domain prolyl isomerase and chaperone SlyD

NMR relaxation unravels interdomain crosstalk of the two domain prolyl isomerase and chaperone SlyD

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KOVERMANN, Michael, Robert ZIEROLD, Caroline HAUPT, Christian LÖW, Jochen BALBACH, 2011. NMR relaxation unravels interdomain crosstalk of the two domain prolyl isomerase and chaperone SlyD. In: Biochimica et Biophysica Acta / Proteins and Proteomics. 1814(7), pp. 873-881. ISSN 1570-9639. eISSN 1878-1454. Available under: doi: 10.1016/j.bbapap.2011.03.016

@article{Kovermann2011-07relax-44623, title={NMR relaxation unravels interdomain crosstalk of the two domain prolyl isomerase and chaperone SlyD}, year={2011}, doi={10.1016/j.bbapap.2011.03.016}, number={7}, volume={1814}, issn={1570-9639}, journal={Biochimica et Biophysica Acta / Proteins and Proteomics}, pages={873--881}, author={Kovermann, Michael and Zierold, Robert and Haupt, Caroline and Löw, Christian and Balbach, Jochen} }

NMR relaxation unravels interdomain crosstalk of the two domain prolyl isomerase and chaperone SlyD 2019-01-18T13:08:29Z Haupt, Caroline The dynamics of the two domain prolyl-peptidyl cis/trans isomerase and chaperone SlyD was studied on a ps-to-ns time scale to correlate dynamic changes with the catalytic function.<sup> 15</sup>N transversal and longitudinal relaxation rates as well as heteronuclear Overhauser effects were determined at different temperatures for Escherichia coli SlyD (EcSlyD) and for Thermus thermophilus SlyD (TtSlyD). With the well established extended Lipari-Szabo approach, the order parameter, S<sup>2</sup>, the internal correlation time, τ<sub>e</sub>, the exchange rate, R<sub>ex</sub>, of the backbone amide protons, and the overall molecular tumbling time, τ<sub>m</sub>, were determined. The study was extended to a relaxation analysis of the peptide bound state for both SlyD species. We found highly different relaxation and dynamic behavior of the two domains for free SlyD. Surprisingly, in the presence of a substrate for the chaperone domain, the ps-to-ns dynamics in the remote center of the prolyl-peptidyl cis/trans isomerization domain increases. We observed this crosstalk between the two domains for both EcSlyD and TtSlyD. 2011-07 eng Kovermann, Michael Zierold, Robert Zierold, Robert Kovermann, Michael Balbach, Jochen Löw, Christian Löw, Christian 2019-01-18T13:08:29Z Haupt, Caroline Balbach, Jochen

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