Figure 9
Isomorphous difference electron density within 3.2 Å of the retinal chromophore 1 ps after light activation. Dark-state (SwissFEL) C atoms of Lys296 are shown in red, N atoms in purple and retinal atoms in pink. 1 ps light-activated (SwissFEL) C atoms of Lys296 are shown in dark green, N atoms in cyan and retinal atoms in light green. (a) Original diffraction intensities (contoured at 4.0σ, equivalent to 0.075 e− Å−3) and (b) corrected intensities (contoured at 4.0σ, equivalent to 0.075 e− Å−3). |