Adding to complexity , the alternative sigma factor RpoS not only activates and is activated by small RNAs , but also activates the csgD transcriptional regulator MlrA , while RpoS degradation is indirectly stimulated by RtsA .
Adding to complexity , the alternative sigma factor RpoS not only activates and is activated by small RNAs , but also activates the csgD transcriptional regulator MlrA , while RpoS degradation is indirectly stimulated by RtsA .