Fig. 5. Effects of growth condition on the Alc. vinosum LH1–RC complex.

a Absorption spectra of the sucrose-density purified LH1–RC complexes from cells grown in Ca²⁺-free media (−Ca) followed by addition of 20 mM CaCl₂ (+Ca) in 20 mM Tris-HCl (pH7.5) buffer containing 0.08% w/v DDM. b Absorption spectra of the LH1–RC complexes purified using Na-DEAE chromatography from cells grown under incandescent illumination at middle light (ML) and low light (LL) intensities, or under LED illumination (LED850).