passages.id: split_6_test_3307_passage
passages.type: progene_text
passages.text: Purified CarRJ3 protein bound at two operator sequences OI and OII , showing that CarRJ3 directly represses Pu13 in the absence of its inducer , which was identified as 2-hydroxy-6-oxo-6-(2' - aminophenyl ) hexa-2,4-dienoate , an intermediate of the carbazole degradation pathway .