Figure 1. Superposition of the structures of the three
polypeptide chains observed in the crystal of the F14Y mutant
variant (A) and the three chains observed in the crystal of the
F14W mutant variant (B). The backbone of the protein chains are
displayed in stick format. The side chains at position 14 are
selectively shown and labeled.
The above figure is reprinted
by permission from John Wiley & Sons, Inc.: