SraE/RygA/RygB family RNA

The SraA RNA is a small non-coding RNA that was discovered in E. coli during two large scale screens. SraE (also known as RygB) is highly abundant in stationary phase, but low levels could be detected in exponentially growing cells as well. RygB is adjacent to RygA a closely related RNA. The function of these RNAs is unknown but it seems likely given that they bind to the Hfq protein that they regulate gene expression by antisense binding.