passages.id: split_4_test_707_passage
passages.type: progene_text
passages.text: The rocG gene of Bacillus subtilis , encoding a catabolic glutamate dehydrogenase , is transcribed by SigL ( sigma(54) ) - containing RNA polymerase and requires for its expression RocR , a member of the NtrC / NifA family of proteins that bind to enhancer - like elements , called upstream activating sequences ( UAS ) .