ChIP was performed as previously described for U2OS cells [6 (link)] and Flag-biotin-tagged GATA4 [5 (link)]. ChIP-sequencing was previously described [8 (link)]. Motif analysis was performed using Meme Suite [25 (link)]. FOXC1 was immunoprecipitated with a goat polyclonal antibody (Abcam, ab5079). The specific primers for SYBR Green assays used for qPCR are listed in Supplemental Table S1. All data were compared to the percent input and a negative control region [8 (link)].
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