MALAT-1 promoter activity and transcript levels correlate with p53 activity. A. Several consensus binding sites were detected upstream of the MALAT-1 start site, including five p53 binding sites (green), three T antigen binding sites (red), two TCF-2 binding sites (purple), and two E2F-1 binding sites (blue). B. Representative data showing significantly increased MALAT-1 promoter activity in p53-deficient SAOS cells 72 hours after transfection with p53-expressing constructs. C. Representative levels of MALAT-1 expression in different cell types with or without p53 gene expression, presented as the change (n-fold) in MALAT-1 transcript levels (level in OKF6 cells arbitrarily set to 1).