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Exploring the blueprint of photoprotection in Mycosporine-like Amino Acids
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Whittock, Abigail L., Auckloo, Nazia, Cowden, Adam M., Turner, Matthew A. P., Woolley, Jack Matthew, Wills, Martin, Corre, Christophe and Stavros, Vasilios G. (2021) Exploring the blueprint of photoprotection in Mycosporine-like Amino Acids. The Journal of Physical Chemistry Letters, 12 (14). pp. 3641-3646. doi:10.1021/acs.jpclett.1c00728 ISSN 1948-7185.
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Official URL: http://dx.doi.org/10.1021/acs.jpclett.1c00728
Abstract
Microorganisms require protection against the potentially damaging effects of ultraviolet radiation exposure. Photoprotection is, in part, provided by mycosporine-like amino acids (MAAs). Previous reports have proposed that nonradiative decay mediates the impressive photoprotection abilities of MAAs. In this letter, we present the first ultrafast dynamics study of two MAAs, shinorine and porphyra-334. We demonstrate that, in aqueous solution, these MAAs relax along their S1 coordinates toward the S1/S0 conical intersection within a few hundred femtoseconds after photoexcitation and then traverse the conical intersection and vibrationally cool in approximately 1 ps through heat transfer to the solvent. This new insight allows a quintessential component of microbial life to be unraveled and informs the development of molecular photon-to-heat converters for a myriad of applications.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry Q Science > QP Physiology Q Science > QR Microbiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | |||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Mycosporine-like amino acids , Porphyria , Flash photolysis , Photochemistry, Ultraviolet radiation -- Physiological effect | |||||||||||||||||||||||||||||||||
Journal or Publication Title: | The Journal of Physical Chemistry Letters | |||||||||||||||||||||||||||||||||
Publisher: | American Chemical Society | |||||||||||||||||||||||||||||||||
ISSN: | 1948-7185 | |||||||||||||||||||||||||||||||||
Official Date: | 15 April 2021 | |||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 12 | |||||||||||||||||||||||||||||||||
Number: | 14 | |||||||||||||||||||||||||||||||||
Page Range: | pp. 3641-3646 | |||||||||||||||||||||||||||||||||
DOI: | 10.1021/acs.jpclett.1c00728 | |||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | “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 [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].” | |||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 15 April 2021 | |||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 7 April 2022 | |||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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