Table 2. Habitats and lifestyles of bacteria and archaea possessing CLCA proteins.

Species, strain	phylum	environment	lifestyle	oxygen requirement	energy source	thermo-philic
Alkalilimnicola ehrlichii MLHE-1	γ-proteobacteria	aquatic	free living	facultative anaerobic	chemoautotroph	−
Aminomonas paucivorans	Synergistetes	aquatic/sewage	free living	anaerobic	chemoautotroph	−
Chloroflexus aurantiacus J-10-fl	Chlorflexi	aquatic/hot springs	free living	facultative aerobic	photoautotroph	+
Citreicella sp. SE45	α-proteobacteria	aquatic	free living	aerobic	chemoautotroph	−
Desulfobulbus propionicus DSM 2032	δ-proteobacteria	aquatic/marine sediments	free living	anaerobic	chemoautotroph	−
Herpetosiphon aurantiacus DSM 785	Chlorflexi	aquatic	free living	aerobic	chemotroph	−
Plesiocystis pacifica SIR-1	δ-proteobacteria	marine/aquatic	free living	aerobic	chemoheterotroph	−
Roseiflexus sp. RS-1	Chlorflexi	aquatic	free living	aerobic	phototroph	+
Shewanella sp. MR-4	γ-proteobacteria	aquatic	free living	facultative anaerobie	heterotroph	mesophile (30–40°C)
Thermococcus_sp._AM4	Euryarchaeota (Archaea)	aquatic	free living	facultative anaerobie	chemoautotroph	hyper-thermofile