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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Circ Res. 2014 Jan 31;114(3):524–537. doi: 10.1161/CIRCRESAHA.114.300559

Figure 3.

Figure 3

Hydrophobic residues and polar interactions (dashed lines) in the ubiquinone-binding site (Qp site) of mammalian complex II. The quinone-binding pocket is revealed by the X-ray structure (pdb 1ZOY), and involves the residues Trp B172, Trp B173, His B216, Arg C46, Asp D90, Tyr D91. The residues of the ubiquinone-binding site are determined by X-ray structure to be Trp B173 and Tyr D91. UQ denotes ubiquinone.