passages.id: split_5_test_1146_passage
passages.type: progene_text
passages.text: Systematic mutation in the CCAAT motif showed that NF-Y ( CIII binding protein ) bound to the 12 bp sequence GGCGCTGCCAAT ( - 79 to - 68 bp ) and the CI / CII binding protein bound to 9 bp , TGCCAATCA ( - 74 to - 66 bp ) .