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Figure 3
(a) Surface representation of a single subunit, showing the pocket that accommodates the substrate (magenta) that is augmented by interactions with residues His4 and Arg43 (yellow) from the neighbouring subunit. (b). Stereoview of ligand binding, based on the position of adenosine (stick representation, coloured by atom) in T. thermophilus PNP (Tahirov et al., 2004 ![]() |