(PPAR-γ or PPARG), also known as the glitazone reverse insulin resistance receptor, or NR1C3 (nuclear receptor subfamily 1, group C, member 3) a type II nuclear receptor functioning as a transcription factor that in humans is encoded by the PPARG gene.

Peroxisome proliferator-activated receptor alpha, also known as NR1C1 (nuclear receptor subfamily 1, group C, member 1), is a nuclear receptor protein functioning as a transcription factor that in humans is encoded by the PPARA gene.

Peroxisome proliferator-activated receptor delta (PPAR-delta), or (PPAR-beta), also known as Nuclear hormone receptor 1 is a nuclear receptor that in humans is encoded by the PPARD gene.