UxuA RNA motif
The "uxuA" RNA motif is a conserved RNA structure that was discovered by bioinformatics. "uxuA" motif RNAs are found in the bacterial genus "Vibrio". "uxuA" RNAs occur upstream of genes that encode mannonate dehydratase, which functions as part of the catabolism of glucuronate. This gene association could suggest that "uxuA" RNAs operate as cis-regulatory elements to control expression of the mannonate dehydratase genes. However, since the RNAs are found in relatively closely related organisms, it is possible that the apparent gene association arose by chance. Therefore, "uxuA" RNAs might also function in "trans" as small RNAs