Disease relevance of Chromatiaceae

• These isotopic compositions suggest that green sulfur bacteria Chlorobium phaeovibrioides would conduct nitrogen fixation in the chemocline, whereas purple sulfur bacteria Halochromatium sp. and cyanobacteria Synechococcus sp. may assimilate nitrite [1].
• Phosphatidylcholine was present as a major component in all species of the genus Ectothiorhodospira, but was not detected in the remaining Chromatiaceae [2].
• In a mat, where the O2-H2S interface was close to the photic zone, but yet received no significant visible light, purple sulfur bacteria (Chromatium sp.) were the dominant sulfide oxidizers [3].
• All strains contain cysteine sythase active with O-acetylserine; only the Chromatiaceae, two species of the Rhodospirillaceae and T. denitrificans contain S-sulfocysteine synthase [4].

High impact information on Chromatiaceae

• Included are glutathione amide and its perthiol, produced by phototrophic purple sulfur bacteria and apparently involved in their sulfide metabolism [5].
• The phylogenetically more coherent purple sulfur bacteria (Chromatiaceae) uniformly contain D-mannose in their phosphate-free lipid A [6].
• Farnesol, tetradecanol, hexadecanol, and hexadecenol all were significantly enriched in (13)C compared to bulk dissolved and particulate organic carbon and compared to the biomarkers of purple sulfur bacteria [7].
• Mannose and small amounts of 2,3-diamino-2,3-dideoxy-D-glucose were common constituents of the lipid A of the three Chromatiaceae species investigated [8].
• Strain AZ1 is much more versatile than most other Chromatiaceae with respect to electron donor and organic substrates [9].

Chemical compound and disease context of Chromatiaceae

• Competition for sulfide among colorless and purple sulfur bacteria in cyanobacterial mats [3].
• In purple sulphur bacteria of the family Chromatiaceae sulphite oxidation via intermediary formation of adenylylsulphate is an enzymologically well characterized process [10].
• Formation of bacteriochlorophyll form B820 in light harvesting 2 complexes from purple sulfur bacteria treated with dioxane [11].
• Phototrophic purple sulphur bacteria (Chromatiaceae) were detected in the geological record based on the new carotenoid biomarker okenane, and they seem to have co-existed with communities of green sulphur bacteria (Chlorobiaceae) [12].

Gene context of Chromatiaceae

• This 26% sequence difference is similar to that observed among separate species of chromatiaceae such as Chromatium vinosum, C. gracile, and Thiocapsa roseopersicina, and is suprising because there are no distinguishing microbiological characteristics separating these two R. tenue strains [13].
• The diversity of Chromatiaceae (six morpho-/pigment types of the genus Chromatium, plus two non identified Chromatiaceae, named PB1 and PB2 were observed) was noticeable [14].

References