Fig. 3From: Structural insights into the mechanism defining substrate affinity in Arabidopsis thaliana dUTPase: the role of tryptophan 93 in ligand orientationInteractions between serine 89 and tryptophan 93 in Arabidopsis dUTPase. a Location of the Trp93 side chain in each subunit at different stages of substrate orientation. b Comparison of amino acids in other dUTPases that correspond to Ser 89 and Trp 93 in Arabidopsis dUTPaseBack to article page