@article{mbs:/content/journal/ijsem/10.1099/00207713-39-3-258, author = "Dewhirst, Floyd E. and Paster, Bruce J. and Bright, Patricia L.", title = "Chromobacterium, Eikenelia, Kingella, Neisseria, Simonsiella, and Vitreoscilla Species Comprise a Major Branch of the Beta Group Proteobacteria by 16S Ribosomal Ribonucleic Acid Sequence Comparison: Transfer of Eikenella and Simonsiella to the Family Neisseriaceae (emend.)", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "1989", volume = "39", number = "3", pages = "258-266", doi = "https://doi.org/10.1099/00207713-39-3-258", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-39-3-258", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", abstract = "Abstract The 16S ribosomal ribonucleic acid sequences of the type strain and three other strains of Eikenella corrodens, the type strains of Alcaligenes faecalis, Alcaligenes xylosoxydans subsp. denitrificans, Chromobacterium fluviatile, Chromobacterium violaceum, Kingella denitrificans, Kingella kingae, and Pseudomonas cepacia, and a strain of Vitreoscilla stercoraria were determined by direct sequencing of bacterial ribosomal ribonucleic acid by a modified Sanger method. These sequences were compared with previously published sequences of Neisseria gonorrhoeae and Pseudomonas testosteroni and unpublished sequences of Nitrosolobus sp., Nitrosomonas europaea, Rhodocyclus gelatinosus, Rhodocyclus purpura, Simonsiella muelleri, and Spirillum volutans. All of the bacteria sequenced in this study were members of the beta group of the class Proteobacteria, formerly called “purple bacteria and their relatives.” A phylogenetic tree was constructed based upon the sequence homologies. One of the findings of this study is that Eikenella corrodens is related, as indicated by percentage of sequence homology, to the following organisms: Kingella denitrificans (97.7%), Simonsiella muelleri (95.7%), Kingella kingae (96.2%), Neisseria gonorrhoeae (95.1%), Vitreoscilla stercoraria (94.4%), Chromobacterium violaceum (91.7%), and Chromobacterium fluviatile (89.8%). These bacteria constitute a newly recognized branch of the beta group Proteobacteria. The remaining species, including Pseudomonas cepacia, Alcaligenes faecalis, and Alcaligenes xylosoxydans subsp. denitrificans, are members of the major cluster of the beta group Proteobacteria. On the basis of our data we propose that the genera Eikenella and Simonsiella be placed in the family Neisseriaceae.", }