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![[Figure 3]](lv5059fig3mag.jpg)
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Figure 3
Examples of ion binding in thermolysin (PDB entry 2whz; B. A. Lund, I. Leiros & H.-K.S. Leiros, unpublished work), showing the criteria used to determine the identity of the indicated zinc (a) and calcium (b) sites starting from refined water molecules. Green and red meshes are mFo − DFc density at ±3.0σ and pink mesh is anomalous difference density at 3.0σ. Red spheres are water molecules. Distances are labeled in Å. |
![[Figure 3]](lv5059fig3.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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