Tracking X-Ray-Derived Redox Changes in Crystals of a Methylamine Dehydrogenase/Amicyanin Complex Using Single-Crystal Uv/Vis Microspectrophotometry.Pearson, A.R., Pahl, R., Kovaleva, E.G., Davidson, V.L., Wilmot, C.M.
(2007) J Synchrotron Radiat 14: 92
- PubMed: 17211075
- DOI: https://doi.org/10.1107/S0909049506051259
- Primary Citation of Related Structures:
2J55, 2J56, 2J57
- PubMed Abstract:
X-ray exposure during crystallographic data collection can result in unintended redox changes in proteins containing functionally important redox centers. In order to directly monitor X-ray-derived redox changes in trapped oxidative half-reaction intermediates of Paracoccus denitrificans methylamine dehydrogenase, a commercially available single-crystal UV/Vis microspectrophotometer was installed on-line at the BioCARS beamline 14-BM-C at the Advanced Photon Source, Argonne, USA. Monitoring the redox state of the intermediates during X-ray exposure permitted the creation of a general multi-crystal data collection strategy to generate true structures of each redox intermediate.
Department of Biochemistry, Molecular Biology and Biophysics, The University of Minnesota, Minneapolis, MN 55455, USA.