Fig. 1. Structural formulas of riboflavin (RF), flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD)

Fig. 2. Schematic diagrams of several redox and protonation states of flavin (a) and π bond molecular orbitals (b)

Fig. 3. The electron transfer process of the animal-like cryptochrome of Chlamydomonas reinhardtii (CraCRY)^[37]

Fig. 4. The photochemical cycle process of F10T molecules affected by an external magnetic field^[48]