Abstract
Green photosynthetic bacteria are anoxygenic prokaryotes that contain a light gathering antenna complex known as a chlorosome (for reviews see references 1–2). The chlorosome is an ellipsoidal structure of dimensions approximately 100 nm × 30 nm × 12 nm in the green gliding bacterium Chloroflexus aurantiacus and somewhat larger in the green sulfur bacteria such as Chlorobium vibrioforme. The chlorosome is bounded by an envelope thought to be a lipid monolayer with some associated proteins. It is attached to the cytoplasmic side of the inner cell membrane, with additional membrane-bound antenna complexes and reaction centers embedded within the membrane (Fig. 1). Chlorosomes contain approximately 10,000 molecules of bacteriochlorophyll c, d or e and smaller amounts of BChl a and carotenoids.
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