Fig. 3.
Analysis of the efficiency of steady-state excitation energy transfer from carotenoid to BChl a in purified LH1-RC complexes from strains DP2 (A) and TS2 (B), and from Tch. tepidum (C). Fluorescence emission spectra (dashed lines) were plotted to match the maximum intensities to those of the LH1-Qy bands in fractional absorption spectra (1 − T, where T is transmittance) (solid black) on the same scale. Fluorescence excitation spectra (red) detected at fluorescence emission maxima were normalized at LH1 Soret bands in fractional absorption spectra.