1FKT:
reference: Solution structure of FKBP, a rotamase enzyme and receptor for FK506 and rapamycin., Michnick SW, Rosen MK, Wandless TJ, Karplus M, Schreiber SL, Science 1991 May 10;252(5007):836-9. PMID: 1709301

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).