passages.id: split_1_test_728_passage
passages.type: progene_text
passages.text: Both RapC and CSF were found to be part of autoregulatory loops that affect transcription from P1 , which we show is activated by ComA approximately P. RapC negatively regulates its own expression , presumably due to its ability to inhibit accumulation of ComA approximately P. CSF positively regulates its own expression , presumably due to its ability to inhibit RapC activity .