Fig. 6: Binding modes of cyclic peptides.

a Cavity for RES-701-3. The ETB receptor is shown as a molecular surface. b, c Cavities for MccJ25 in bacterial RNA polymerase (PBD 6N60) (b) and the siderophore receptor FhuA (PBD 4CU4) (c). d Crystal structures of the P. furiosus MATE transporter bound to the thioether-macrocyclic peptides MaD3S (PBD 3VVS) and MaL6 (PBD 3WBN).