U.S. Department of Energy Office of Scientific and Technical Information
X-ray Free Electron Laser Determination of Crystal Structures of Dark and Light States of a Reversibly Photoswitching Fluorescent Protein at Room Temperature
Journal Article·· International Journal of Molecular Sciences (Online)
The photochromic fluorescent protein Skylan-NS (Nonlinear Structured illumination variant mEos3.1H62L) is a reversibly photoswitchable fluorescent protein which has an unilluminated/ground state with an anionic and cis chromophore conformation and high fluorescence quantum yield. Photo-conversion with illumination at 515 nm generates a meta-stable intermediate with neutral trans-chromophore structure that has a 4 h lifetime. We present X-ray crystal structures of the cis (on) state at 1.9 Angstrom resolution and the trans (off) state at a limiting resolution of 1.55 Angstrom from serial femtosecond crystallography experiments conducted at SPring-8 Angstrom Compact Free Electron Laser (SACLA) at 7.0 keV and 10.5 keV, and at Linac Coherent Light Source (LCLS) at 9.5 keV. We present a comparison of the data reduction and structure determination statistics for the two facilities which differ in flux, beam characteristics and detector technologies. Furthermore, a comparison of droplet on demand, grease injection and Gas Dynamic Virtual Nozzle (GDVN) injection shows no significant differences in limiting resolution. The photoconversion of the on- to the off-state includes both internal and surface exposed protein structural changes, occurring in regions that lack crystal contacts in the orthorhombic crystal form.
Hutchison, Christopher D. M., et al. "X-ray Free Electron Laser Determination of Crystal Structures of Dark and Light States of a Reversibly Photoswitching Fluorescent Protein at Room Temperature." International Journal of Molecular Sciences (Online), vol. 18, no. 9, Sep. 2017. https://doi.org/10.3390/ijms18091918
Hutchison, Christopher D. M., Cordon-Preciado, Violeta, Morgan, Rhodri, Nakane, Takanori, Ferreira, Josie, Dorlhiac, Gabriel, Sanchez-Gonzalez, Alvaro, Johnson, Allan S., Fitzpatrick, Ann, Fare, Clyde, Marangos, Jon P., Yoon, Chun Hong, Hunter, Mark S., DePonte, Daniel P., Boutet, Sébastien, Owada, Shigeki, Tanaka, Rie, Tono, Kensuke, Iwata, So, & van Thor, Jasper J. (2017). X-ray Free Electron Laser Determination of Crystal Structures of Dark and Light States of a Reversibly Photoswitching Fluorescent Protein at Room Temperature. International Journal of Molecular Sciences (Online), 18(9). https://doi.org/10.3390/ijms18091918
Hutchison, Christopher D. M., Cordon-Preciado, Violeta, Morgan, Rhodri, et al., "X-ray Free Electron Laser Determination of Crystal Structures of Dark and Light States of a Reversibly Photoswitching Fluorescent Protein at Room Temperature," International Journal of Molecular Sciences (Online) 18, no. 9 (2017), https://doi.org/10.3390/ijms18091918
@article{osti_1628376,
author = {Hutchison, Christopher D. M. and Cordon-Preciado, Violeta and Morgan, Rhodri and Nakane, Takanori and Ferreira, Josie and Dorlhiac, Gabriel and Sanchez-Gonzalez, Alvaro and Johnson, Allan S. and Fitzpatrick, Ann and Fare, Clyde and others},
title = {X-ray Free Electron Laser Determination of Crystal Structures of Dark and Light States of a Reversibly Photoswitching Fluorescent Protein at Room Temperature},
annote = {The photochromic fluorescent protein Skylan-NS (Nonlinear Structured illumination variant mEos3.1H62L) is a reversibly photoswitchable fluorescent protein which has an unilluminated/ground state with an anionic and cis chromophore conformation and high fluorescence quantum yield. Photo-conversion with illumination at 515 nm generates a meta-stable intermediate with neutral trans-chromophore structure that has a 4 h lifetime. We present X-ray crystal structures of the cis (on) state at 1.9 Angstrom resolution and the trans (off) state at a limiting resolution of 1.55 Angstrom from serial femtosecond crystallography experiments conducted at SPring-8 Angstrom Compact Free Electron Laser (SACLA) at 7.0 keV and 10.5 keV, and at Linac Coherent Light Source (LCLS) at 9.5 keV. We present a comparison of the data reduction and structure determination statistics for the two facilities which differ in flux, beam characteristics and detector technologies. Furthermore, a comparison of droplet on demand, grease injection and Gas Dynamic Virtual Nozzle (GDVN) injection shows no significant differences in limiting resolution. The photoconversion of the on- to the off-state includes both internal and surface exposed protein structural changes, occurring in regions that lack crystal contacts in the orthorhombic crystal form.},
doi = {10.3390/ijms18091918},
url = {https://www.osti.gov/biblio/1628376},
journal = {International Journal of Molecular Sciences (Online)},
issn = {ISSN 1422-0067},
number = {9},
volume = {18},
place = {United States},
publisher = {MDPI},
year = {2017},
month = {09}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 718https://doi.org/10.1016/j.nima.2013.01.057
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