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. 2011 Nov 29;67(Pt 12):1511–1515. doi: 10.1107/S1744309111042965

Figure 2.

Figure 2

Details of the nucleotide-binding site. (a) OMIT electron-density map around the nucleotide contoured at 3σ. (b) Interactions with the mGXP nucleotide. The position of the Asn11 side chain in the wild-type GDP-bound protein (PDB entry 3lx8; Ash et al., 2010 ▶) is indicated by black sticks. A 2F o − F c electron-density map around the active-site residues is shown as a blue mesh contoured at 1.5σ. In this and other figures the β-phosphate from the nucleotide is shown at 60% opacity, indicative of the 60% contribution from mGDP and the 40% contribution from mGMP in the crystals.