Figure 3.

Structure of Photoexcited phy3 LOV2.

Ribbon diagram of the phy3 LOV2 structure under steady state illumination. The FMN cofactor is shown in the center of the fold with the bonds colored red. The sulfur of the conserved LOV Cys residue is pictured attached covalently to carbon 4a of FMN with a yellow adduct bond. Atoms of the Cys side chain and FMN are colored by elements: carbon, green; nitrogen, blue; phosphorus, pink, sulfur, yellow; and oxygen, red. The image was generated in Ribbons (Carson, 1997). Compare with Figure 1B from Crosson and Moffat (2001).