Pseudomonas aeruginosa (Schroeter 1872) Migula 1900 (Approved Lists 1980) Toschka H.Y. Höpfl P. Ludwig W. Schleifer K.H. Ulbrich N. Erdmann V.A. Complete nucleotide sequence of a 16S ribosomal RNA gene from Pseudomonas aeruginosa 1988 16 2348 Nucleic Acids Research Nucleic Acids Res. 0305-1048 1362-4962 3128773 Moore E.R.B. Mau M. Arnscheidt A. Boettger E.C. Hutson R.A. Collins M.D. van de Peer Y. De Watcher R. Timmis K.N. The determination and comparison of the 16S rRNA gene sequences of species of the genus Pseudomonas (sensu stricto) and estimation of the natural intrageneric relationships 1996 19 4 478 492 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 10.1016/S0723-2020(96)80021-X Judicial Commission Opinion 36: Designation of Strain ATCC 10145 as the Neotype Strain of Pseudomonas aeruginosa (Schroeter) Migula 1970 20 1 15 16 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-20-1-15 It looks like X06684 (sequenced in 1988) is only a 98% match to the 16S genes from the genome. I think that sequence is likely suspect. There are two 16S genes in the chromosome, and they have been sequenced at least twice: (1996) Z76651,Z76672 and (2012) HE978271,LN681564. These four are nearly identical, and X06684 is the outlier.