Red Shift in the Absorption Spectrum of Phototropin LOV1 upon the Formation of a Semiquinone Radical: Reconstructing the Orbital Architecture
Patrick Kurle-Tucholski,
Christian Wiebeler,
Lisa Köhler
et al.
Abstract:Flavin mononucleotide (FMN) is a ubiquitous blue-light
pigment
due to its ability to drive one- and two-electron transfer reactions.
In both light-oxygen-voltage (LOV) domains of phototropin from the
green algae Chlamydomonas reinhardtii, FMN is noncovalently bound. In the LOV1 cysteine-to-serine mutant
(C57S), light-induced electron transfer from a nearby tryptophan occurs,
and a transient spin-correlated radical pair (SCRP) is formed. Within
this photocycle, nuclear hyperpolarization is created by the solid-… Show more
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