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![[Figure 3]](jb5014fig3mag.jpg)
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Figure 3
An enlarged image of 2-hydroxyatrazine in the binding site. The difference map (mFo − DFc) is set to 3σ and the compound has good density, with the exception of the isopropyl group, which can be found in more than one orientation but has clashes with the protein (for example Asn218) in all possible orientations. The same residues that make hydrogen bonds to guanine make very similar interactions with the 2-hydroxyatrazine heteroatoms and the compound is sandwiched between Tyr45 and Trp194 in a similar fashion to guanine. C atoms are in cyan, O atoms are in red and N atoms are in dark blue. |
![[Figure 3]](jb5014fig3.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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