Fig. 1. Superposition of the crystal structures of
AtFKBP42^1-180 (blue), HsFKBP12 (grey) and AtFKBP13 (orange).
Secondary structure elements of the canonical FKBP fold are
numbered consecutively; β0 is an additional β-strand present
in AtFKBP42^1-180. The FK506 molecule bound to HsFKBP12 is shown
as stick model.
The above figure is reprinted
by permission from the Federation of European Biochemical Societies: