Magnetic field effects on radical pair reactions: estimation of B_1/2 for flavin-tryptophan radical pairs in cryptochromes.

ABSTRACT: Magnetic field effects on the yields of radical pair reactions are often characterised by the "half-field" parameter, B_1/2, which encodes useful information on spin relaxation, radical recombination kinetics and electron-electron couplings as well as electron-nuclear hyperfine interactions. Here we use a variety of spin dynamics simulation methods to estimate the hyperfine-only values of B_1/2 for the flavin-tryptophan radical pair, [FAD˙^- TrpH˙⁺], thought to be the detector in the magnetic compass sense of migratory songbirds. The main findings are: (a) in the absence of fast recombination and spin relaxation, [FAD˙^- TrpH˙⁺] radical pairs in solution and in the putative magnetoreceptor protein, cryptochrome, ha

SUBMITTER: Wong SY 

PROVIDER: S-EPMC9811481 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature