Figure 9. Cartoon schematically representing the mechanism of heterodimerization and binding to the DNA.
When the PPAR is activated, it recruits RXR, forming an intermediary heterodimer, which has the LBDs and DBDs domains in extended and open conformation. Following to DNA binding, the PPAR/RXR heterodimers suffer additional conformational changes, becoming more condensed and less solvent-exposed.