Noncoding small RNAs are essential for modulating bacterial gene expression, especially under carbon and nutrient-limited conditions. In this study, by using both in silico and molecular hybridization tools, we identified a carbon source responsive small RNA in Acinetobacter baumannii DS002. Expression of corresponding gene, abcR200, located at the intergenic region of omt (O-methyl transferase) and orf72 genes, is under the transcriptional control of a global transcriptional factor, leucine responsive regulatory protein (Lrp). A sequence motif that serves as a target for Lrp was found overlapping the abcR200 promoter (P