The gcvB RNA gene encodes a small non-coding RNA involved in the regulation of a number of amino acid transport systems as well as amino acid biosynthetic genes. The GcvB gene is found in enteric bacteria such as Escherichia coli.
In the context of bacterial genetics, the gcvB RNA gene has a regulatory function that affects multiple aspects of amino acid metabolism. Specifically, it is found in enteric bacteria such as E. coli.