loop_ _atom_sites_footnote.id _atom_sites_footnote.text 1 ; The inhibitor binds to the enzyme in two alternative orientations. The two orientations have been assigned alternative IDs *1* and *2*. ; 2 ; Side chains of these residues adopt alternative orientations that correlate with the alternative orientations of the inhibitor. Side chains with alternative ID *1* and occupancy 0.58 correlate with inhibitor orientation *1*. Side chains with alternative ID *2* and occupancy 0.42 correlate with inhibitor orientation *2*. ; 3 ; The positions of these water molecules correlate with the alternative orientations of the inhibitor. Water molecules with alternative ID *1* and occupancy 0.58 correlate with inhibitor orientation *1*. Water molecules with alternative ID *2* and occupancy 0.42 correlate with inhibitor orientation *2*. ; 4 ; Side chains of these residues adopt alternative orientations that do not correlate with the alternative orientation of the inhibitor. ; 5 ; The positions of these water molecules correlate with alternative orientations of amino-acid side chains that do not correlate with alternative orientations of the inhibitor. ;