Figure 8. Amino acid sequence alignments of human and porcine IL-20 receptors. Receptor-cytokine (bold/yellow) and receptor-receptor
(bold/green) contact residues are highlighted. Residue changes in the porcine receptors are highlighted in cyan. Contact residues
are based on the crystal structure of the interleukin-20 (IL-20)–IL-20RA–IL-20RB complex (pdbid=4doh). H, human; P, porcine.