6X4Q

Human cyclophilin A bound to a series of acylcic and macrocyclic inhibitors: (2R,5S,11S,14S,18E)-14-cyclobutyl-2,11,17,17-tetramethyl-15-oxa-3,9,12,26,29-pentaazatetracyclo[18.5.3.1~5,9~.0~23,27~]nonacosa-1(25),18,20(28),21,23,26-hexaene-4,10,13,16-tetrone (compound 33)