Anticancer actions of PPARγ ligands: Current state and future perspectives in human lung cancer

Figure 1 Structure of human peroxisome proliferator-activated receptor (PPAR)γ protein isoforms and domains. A: AR proteins. The three subtypes of mRNAs give rise to two different PPARγ proteins. Transcription of the PPARγ1 and 3 promoters result in the same protein of 477 amino acids (aa). The PPARγ2 protein of 507 amino acids is produced by transcription from the promoter γ2 area; B: main structure of PPARγ. PPARs contain the following functional regions: an N-terminal A/B domain (ligand-independent domain), a C-domain (DNA-binding domain), a D-domain (hinge domain), and a C-terminal domain (E-F ligand-dependent domain).