GcvB RNA

The gcvB RNA gene encodes a small non-coding RNA involved in expression of the dipeptide and oligopeptide transport systems in Escherichia coli. Transcription of the GcvB RNA is activated by the adjacent GcvA gene and repressed by the GcvR gene. A deletion of GcvB RNA from Y. pestis changed colony shape as well as reducing growth. GcvB is bound by the Hfq protein.

Species distribution
The GcvB RNA is found in a range of bacteria including:
 * E. coli
 * Y. pestis
 * H. influenzae
 * V. cholerae