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. Author manuscript; available in PMC: 2011 Mar 9.
Published in final edited form as: Biochemistry. 2010 Mar 9;49(9):2058–2067. doi: 10.1021/bi902041j

FIGURE 6.

FIGURE 6

Ribbon diagram showing a catalytic site of human PNP in the presence of ImmH and phosphate. Blue labels (residues protected during H/D exchange); dark yellow (ribbon structure of monomer); bronze (ribbon structure of neighboring monomer); cyan (carbon backbone); blue (nitrogen atoms); red (oxygen atoms); yellow (sulfur atom); gold (phosphorus atom). F159* is protected from the neighboring subunit. Dashed lines indicate hydrogen bonds or ionic interactions and distances are shown in angstroms (from PDB code: 1rr6).