ABSTRACT
The term green bacteria comprises photosynthetic organisms containing large light-harvesting (LH) complexes called chlorosomes. It includes most of the members of the phylum Chlorobi (green sulfur bacteria, or GSB), some of the Chloroflexi (filamentous anoxygenic phototrophs, or FAP), and one known member of Acidobacteria, Chloracidobacterium (Cab.) thermophilum (Tank and Bryant 2015). The organization and properties of the LH apparatus are responsible for the light-gathering capability of green bacteria. However, the exact structure of photosynthetic complexes from green bacteria is often not known. This information is reviewed in this chapter. Particular attention is dedicated to two of the LH complexes: the chlorosome and the FMO protein.
