LOV2 domain of Avena sativa phototropin
Protein DomainThe LOV2 domain of Avena sativa phototropin is a PAS-family blue-light-sensing protein domain that binds flavin mononucleotide (FMN) and undergoes a self-contained photocycle. Illumination causes loss of blue-light absorbance consistent with formation of a flavin-cysteinyl adduct, followed by spontaneous dark recovery.