Gammaproteobacteria

class of bacteria Gammaproteobacteria (Gammaproteobacteria) is a class of organisms united by key anatomical and physiological traits. It contains 7 orders with 187 known species. Key order groups include Acidiferrobacterales, Beggiatoales, Burkholderiales, Enterobacterales, Pseudomonadales, and Thiotrichales. It belongs to Proteobacteria (Proteobacteria).