Fig. 5: Ligand binding interface of GPR109A.

a List of GPR109A residues interacting with ligands, with key interacting residues highlighted (R1113.36 – orange, S178ECL2 – green, S179ECL2 – blue). b Cross-section of GPR109A orthosteric pocket depicting the hydrophobic patch surrounding the individual ligand. c Interacting residues of GPR109A with the extended part of MK6892. d Conformational changes of GPR109A residues interacting with MK6892 with respect to niacin.