Fig. 3.
Crystallographic structures of the Pizza proteins. X-ray crystallographic analysis of five Pizza proteins confirmed the expected quaternary structure in each case, showing a six-bladed propeller. One blade of Pizza7H is not visible in the electron-density maps. Superposition of the expected and experimental structures (bottom row) demonstrates close agreement with the backbone-rmsd as shown. The mutated residues in Pizza2-SR are depicted as spheres.