Thermochromatium

Ther' mo.chro.ma' ti.um. Gr. adj. thermos hot; Chromatium a genus name; M.L. neut. n. Thermochromatium the hot Chromatium. Proteobacteria / Gammaproteobacteria / Chromatiales / Chromatiaceae / Thermochromatium Cells straight to slightly curved rods, multiply by binary fission, motile, most likely by polar flagella. Gram negative, belong to the Gammaproteobacteria, and contain internal photosynthetic membranes of vesicular type in which the photosynthetic pigments bacteriochlorophyll a and carotenoids are located. The mol% G + C of the DNA is: 60–63. Type species: Thermochromatium tepidum (Madigan 1986) Imhoff, Süling and Petri 1998b, 1140 (Chromatium tepidum Madigan 1986, 226.