transcriptional regulator of the [[gene|58276E6FEF9388BBC7FB79BB5A3A1EF3C3DA5BD5]]-[[gene|C3D7C64AD0E58BF326257E23136466A237138B50]]-[[gene|05BFEA711D82395A55B505E5A38286BE2F570350]]-[[gene|4E766839240C8F7D56D87DF9E7B99350A83B5FF7]]-[[gene|CDE9EF9CFB799794D525F12DEC8C4190C6298575]] operon