How Switches Work in Bacteria (IMAGE) Karlsruher Institut für Technologie (KIT) Caption This is a schematic representation of the SAM-I riboswitch in the terminator conformation (switch off; left) and anti-terminator conformation (switch on; right). Credit Graphics: APH/KIT Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.