Fig. 6. Model for the consequences of WAPL and RAD21 depletion.
WAPL depletion results in an accumulation of cohesin at CTCF-binding sites. RAD21 depletion leads to a general loss of cohesin from the genome. Both WAPL and RAD21 depletion results in loss of cohesin binding turnover from cell-type-specific transcription factor binding sites and decreased 3D genome interactions between promoters and these sites.