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. Author manuscript; available in PMC: 2012 Apr 5.
Published in final edited form as: Biochemistry. 2011 Mar 1;50(13):2411–2423. doi: 10.1021/bi200198x

Figure 2.

Figure 2

Protein structure surrounding the FMN cofactor in the wildtype AsLOV2 domain, as identified in crystal structures.22 (A) Dark structure with Cys450 in conformation I, (B) Dark structure with conformation II, (C) Light state adduct. The Ea helix contains the adduct-forming Cys450 residue, while Gln513 in the Iβ-strand makes hydrogen bonds with the O4 of the FMN isoalloxazine ring in the dark state. Phe434 on the Cα helix interacts with Gln513 through Asn414.