The IL20RA/IL20RB dimer is a receptor for IL19, IL20 and IL24. The IL20RA/IL10RB dimer is a receptor for IL26. Heterodimer with IL20RB and heterodimer with IL10RB. Widely expressed with highest levels in skin and testis and high levels in brain. Highly expressed in psoriatic skin. Belongs to the type II cytokine receptor family.