transcriptional repressor of the [[gene|3F502A4DCB1DAD7C3F968465B13C35213240515B]]-[[gene|70B45E7428DB1F6AEF7D2FE3062CC86BE96674FC]]-[[gene|C48798FE13B1521236F5BC5786B9A02D7BC9A336]]-[[gene|1532EC3D741C5AB3D0B642741218FAE00AD460FA]] and [[gene|75DB6231129C28C5D3791BA43A1261CD46A861E8]]-[[gene|83C45215AC86FACB08CF36EB5F9E6B076D7D0F0F]]-[[gene|CBA6108A10AD8B932BC5B19A0E7982D0F56F1E08]]-[[gene|76C8D6BF2CA1FA5E7392C52FFD55FD01EF5AB9DC]] operons