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Cryogenic Ion Spectroscopy of the Green Fluorescent Protein Chromophore in Vacuo

Zagorec-Marks, Wyatt; Foreman, Madison M.; Verlet, Jan R.R.; Weber, J. Mathias

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Authors

Wyatt Zagorec-Marks

Madison M. Foreman

J. Mathias Weber



Abstract

We present the spectrum of the S1 ← S0 transition of an anionic model for the chromophore of the green fluorescent protein in vacuo at cryogenic temperatures, showing previously unresolved vibrational features, and resolving the band origin at 20850 cm-1 (479.6 nm) with unprecedented accuracy. The vibrational spectrum establishes that the molecule is in the Z isomer at low temperature. At increased temperature, theS1 ← S0 band shifts to the red, which we tentatively attribute to emergent population of the E isomer.

Citation

Zagorec-Marks, W., Foreman, M. M., Verlet, J. R., & Weber, J. M. (2019). Cryogenic Ion Spectroscopy of the Green Fluorescent Protein Chromophore in Vacuo. Journal of Physical Chemistry Letters, 10(24), 7817-7822. https://doi.org/10.1021/acs.jpclett.9b02916

Journal Article Type Article
Acceptance Date Nov 4, 2019
Online Publication Date Nov 4, 2019
Publication Date Nov 19, 2019
Deposit Date Nov 13, 2019
Publicly Available Date Nov 4, 2020
Journal Journal of Physical Chemistry Letters
Electronic ISSN 1948-7185
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 10
Issue 24
Pages 7817-7822
DOI https://doi.org/10.1021/acs.jpclett.9b02916
Public URL https://durham-repository.worktribe.com/output/1283521

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpclett.9b02916





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