Fig. 5.

Crystal packing interaction between the protrusions of the MTG molecules in the D3C/G283C MTG crystal structure. Four independent MTG molecules A, B, C, and D in the asymmetric unit are shown in green, blue, orange, and grey, respectively. Residues C3, S101, G250, and C283 are shown with sphere models. a Overall view of the asymmetric unit in the D3C/G283C MTG crystal structure (stereo view). b The interface between MTG molecules A and C (stereo view). c The interface between MTG molecules B and D (stereo view). In figures (b) and (c), the atomic distances (Å unit) between Cα atoms of residues G250 are represented with black line and characters. The residues E107 and Y217, which are representative residues that form crystal packing interactions with residues around the SS-bridge, are shown with stick models