... this family.Finally, when crystallized in the presence of Cu(II), the protein shows the presence of the ion coordinated in a small cavity of the surface at the polar opposites of each monomer, ... [38]. In particular, SycTshares the same topology in the region including the N-terminal helix and the b-sheet element, whereas itdisplays a remarkable difference in the orientation of the a-helices ... to another dimer present in the crystal packing and partially involving it in the coordination. It is likely that the presence of Cu(II) isan artefact of the crystallization, although the possibil-ity...