Figure 4.
Proposed kinetic scheme for excitation transfer and decay pathways in the LH2 antenna of R. sphaeroides 2.4.1 describing the processes occurring in the first 10s of ps after excitation of spheroidene. S2, S1, S*, and T denote the singlet and triplet excited states of spheroidene, and BChl denotes collectively the singlet excited states of bacteriochlorophyll that comprise the Qx and Qy states of B800 and B850. Note that the actual model used in the target analysis comprises nine compartments (see Target Analysis and Table 2, which is published as supporting information on the PNAS web site), that for clarity reasons are not displayed here.