Characterization of the microaerophilic, bacteriochlorophyll a-containing bacterium Gemmatimonas phototrophica sp. nov., and emended descriptions of the genus Gemmatimonas and Gemmatimonas aurantiaca. (semanticscholar.org)
They include the porphyrin - based ring systems of haem, which is essential to the biochemistry of molecular oxygen; chlorophyll and bacteriochlorophyll, which are crucial in trapping solar energy during photosynthesis; and sirohaem, a substance in organisms such as Escherichia coli which is responsible for converting sulphite to sulphide and nitrite to ammonia. (newscientist.com)
A red - pigmented, bacteriochlorophyll (BChl) a-producing strain, AP64T, was isolated previously from the freshwater Swan Lake located in the western Gobi Desert. (semanticscholar.org)