Chromatophore (bacteria)

This article is about the membrane organelle of photosynthetic bacteria. For other uses, see Chromatophore (disambiguation).

A chromatophore is a pigmented (colored), membrane-associated vesicle used to perform photosynthesis in some photosynthetic bacteria.

Chromatophores contain bacteriochlorophyll pigments and carotenoids. In purple bacteria, such as Rhodospirillum rubrum, the light-harvesting proteins are intrinsic to the chromatophore membranes. However, in green sulfur bacteria, they are arranged in specialised antenna complexes called chlorosomes.

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