1CFV:
reference: Antibody fragment Fv4155 bound to two closely related steroid hormones: the structural basis of fine specificity., Trinh CH, Hemmington SD, Verhoeyen ME, Phillips SE, Structure 1997 Jul 15;5(7):937-48. PMID: 9261086

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