ROSE elements, IncA antisense RNAs, and tmRNA identified by 454 sequencing. Sequence coverage profile: blue and light grey color denote transcript coverages derived from sample 1 and 2, respectively. Dark grey colored areas represent an overlap of coverages from both samples. y- and x-axis represent coverage and sequence, respectively. Sequence code: blue, A; yellow, C; orange, G; green, U. Grey arrows represent genes flanking or overlapping sRNA genes. Black arrows represent the sRNAs. (a) ibpA ROSE element (no ID), (b) SMb21295 ROSE element (SmelB085), (c) incA located on pSymA (SmelA103), (d) incA located on pSymB (SmelB006). (e) both fragments, SmelC524 and SmelC525 of the tmRNA.