LOV2 photoreceptor domain from Avena sativa phototropin
Protein DomainThe Avena sativa phototropin LOV2 domain is a blue-light-sensing protein domain that binds an FMN chromophore and undergoes a defined photocycle after illumination. Light absorption drives FMN singlet-to-triplet conversion, covalent cysteinyl-FMN adduct formation, and unfolding of the C-terminal Jα helix docked against the LOV2 β-sheet.