Structure and Properties of Flavins / Tetiana Pavlovska, Radek Cibulka -- Natural Flavins: Occurrence, Role, and Noncanonical Chemistry / Jeroen Drenth, Marco W Fraaije -- Spectral Properties of Flavins / Marek Sikorski, Igor Khmelinskii, Ewa Sikorska -- Modes of Flavin-Based Catalysis / Radek Cibulka, Marco W Fraaije -- Organocatalytic Monooxygenations / Hiroki Iida, Yasushi Imada -- Flavin-Based Supramolecular and Coupled Catalytic Systems / Hiroki Iida, Yasushi Imada -- Flavoprotein Monooxygenases and Halogenases / Caroline E Paul, Alice Guarneri, Willem JH Berkel -- Flavoprotein-dependent Bioreduction / Helen S Toogood, Nigel S Scrutton -- Flavoprotein Oxidases / Daniel Ouedraogo, Giovanni Gadda -- Benzylic Photooxidation by Flavins / Beiyi Cheng, Burkhard Konig -- New Applications of Flavin Photocatalysis / Eva Svobodo, Radek Cibulka -- Light-Driven Flavin-Based Biocatalysis / Daria Grosheva, Todd K Hyster.