This work demonstrates a new method for investigating time-resolved structural changes in protein conformation and oligomerization via photocage-initiated time-resolved X-ray solution scattering by observing the ATP-driven dimerization of the MsbA nucleotide-binding domain. Photocaged small molecules allow the observation of single-turnover reactions of non-naturally photoactivatable proteins. The kinetics of the reaction can be derived from changes in X-ray scattering associated with ATP-binding and subsequent dimerization. This method can be expanded to any small-molecule-driven protein reaction with conformational changes traceable by X-ray scattering where the small molecule can be photocaged.

Josts I., Niebling S., Gao Y., Levantino M., Tidow H., Monteiro D. (2018). Photocage-initiated time-resolved solution X-ray scattering investigation of protein dimerization. IUCRJ, 5(6), 667-672 [10.1107/S2052252518012149].

Photocage-initiated time-resolved solution X-ray scattering investigation of protein dimerization

Levantino M.;
2018-01-01

Abstract

This work demonstrates a new method for investigating time-resolved structural changes in protein conformation and oligomerization via photocage-initiated time-resolved X-ray solution scattering by observing the ATP-driven dimerization of the MsbA nucleotide-binding domain. Photocaged small molecules allow the observation of single-turnover reactions of non-naturally photoactivatable proteins. The kinetics of the reaction can be derived from changes in X-ray scattering associated with ATP-binding and subsequent dimerization. This method can be expanded to any small-molecule-driven protein reaction with conformational changes traceable by X-ray scattering where the small molecule can be photocaged.
2018
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Josts I., Niebling S., Gao Y., Levantino M., Tidow H., Monteiro D. (2018). Photocage-initiated time-resolved solution X-ray scattering investigation of protein dimerization. IUCRJ, 5(6), 667-672 [10.1107/S2052252518012149].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/372338
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