sentence: These four sequences are found in Polaromonas naphthalenivorans CJ2 ( Betaproteobacteria ) , Nitrosococcus oceani ATCC 19707 ( Gammaproteobacteria ) , Chitinophaga pinensis DSM 2588 ( Bacteroidetes ) and Desulfobacterium autotrophicum HRM2 ( Deltaproteobacteria ) .