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![[Figure 5]](mn5090fig5mag.jpg)
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Figure 5
The chromophore Thr65-Trp66-Gly67 in the dominant cis state (shown in orange) and the proximal key residue Lys61 in Fo − Fc electron density (cutoff ρ = 3.0σ) at pH ∼9.0 (a), pH ∼4.8 (b) and pH ∼7.0 in the photoconverted structure (c) (figure created with PyMOL; DeLano, 2002  ). The electron density reveals the alternative conformations of the Thr65 and Lys61 side chains, the presence of trans-state contamination of the Trp66 indole ring (shown in yellow; pH ∼4.8) and the decomposition of the Lys side chain after blue-light illumination. |
![[Figure 5]](mn5090fig5.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
