A S. pneumoniae TIGR4 sRNA SN1 visualized in the genome browser. The sRNA and the additional features are shown as different tracks in the genome browser. sRNA track (in blue) shows the presence of small RNA SN1. Tiling array expression track indicates the higher level of expression in the sRNA SN1 region (located in-between genes SP0019 and SP0020) relative to the intensity threshold cutoff (11.0). Rho-independent terminator track shows a predicted terminator near the 3' end of sRNA. B. Circular representation of S. pneumoniae TIGR4 genome depicting open reading frames and sRNAs. The outermost track (solid black circle, track one) is TIGR4 genome. With reference to track one, moving inward, tracks two and three represent sRNAs in the forward and reverse strand respectively. Tracks four and five (gray) shows the presence of genes on the forward and reverse strand respectively. Track six is the GC plot and the seventh (innermost track) shows the GC skew of the genome.