“…42 DADs have been reported in bacteria that can live in oxygen-deficient environments, such as Pseudomonas fluorescens, Pseudomonas aeruginosa, Escherichia coli, Salmonella typhimurium, and Helicobacter pylori. 43,44 DAAOs have been reported to be present in several bacteria species, including Streptomyces coelicolor and Rubrobacter xylanophilus. 45 In addition, a search of the prokaryotic genome database identified DAAO homologous genes in various bacterial species, suggesting that DAAOs might be present in a wide variety of bacteria.…”