Split open IscS-TusA interface (gray) with superposed uncomplexed proteins (yellow). ShiRong ProteauAriane VillarroyaMagda MoukadiriIsmaïl ZhangLinhua TrempeJean-François MatteAllan Eugenia ArmengodM. CyglerMiroslaw 2010 <p>Above, TusA with secondary structure elements; below, IscS with semitransparent molecular surface. The reorientation of multiple sidechains creates better shape complementarity between the contacting molecular surfaces.</p>