Figure 2
Detection of a false tNCS (translational noncrystallographic symmetry) vector for PDB entry 3hfe. (a) Patterson map (contoured at 3σ) showing a non-origin peak at 21% of the origin peak height that led to identification of the false tNCS vector. (b) Crystal lattice (light blue) superimposed with molecules translated by the false tNCS vector (red), highlighting that it arose through apparent similarity between symmetry-related copies (with opposite orientation) in adjacent chains owing to the recursive nature of the coiled-coil structure. |