Fig. 4: The molecular mechanism of UVR8 monomerization.
From: Dynamics and mechanism of dimer dissociation of photoreceptor UVR8
a Excitation energy is funneled to the pyramid center, enhancing light-perception efficiency from 0.35 to 0.73 (EQY)20. Gray arrows denote directions of energy flows among 3 Trp groups, with labeled energy-transfer efficiency. The direct excitation percentages of the 3 Trp groups are shown in the brackets. b Electron transfer from W233 to W285 in 80 ps with an efficiency of 0.75 (ECS). c The competing charge recombination (CR) in 4 ps and electron transfer (ET) from W285-• to R286+/R338+ in 17 ps with efficiency of 0.19 (EET). d Neutralized R286• or R338• leads to dimer dissociation in milliseconds22 with a total quantum yield of 0.1.
