Nucleotide variations in rRNA molecules of C. abortus strains compared with related taxa and respective nucleotide frequency data within the domain Bacteria.

aNucleotide positions of the 16S rRNA and 23S domain I rRNA are given according to E. coli J01695 secondary structure numbering system [35]; position of 16S-23S Intergenic Spacer based on primary structure is given according to the C. abortus type strain B577T sequence (U68445). Positions of the single nucleotide variations (SNVs) are indicated in boldface. The [181–182] position represents “insertion” position.bMore than two or three accession numbers for each species or family including the type strain (T), were analyzed (the majority of analyzed strains and their accession numbers are given in the Figures S2, S3 and S4); lower-case letters denote residues found only in one of the examined strains; “na”, not available data; “−”, nucleotide gap in rRNA sequence comparison.cDataset from http://www.rna.ccbb.utexas.edu/SAE/2A/nt_Frequency/