Exact(8)
The researchers deduced more about the location of atoms within West Nile based on its close resemblance to the virus that causes dengue fever, another mosquito-borne disease.
The technique relies on the fact that, when an X-ray beam passes through a crystallised molecule of a protein, it creates a diffraction pattern (a kind of molecular imprint) that can be used to calculate the location of atoms in the crystal.
The centrality becomes higher as the location of atoms gets closer to the center of a molecule.
When it comes to solving protein structures, scientists usually turn to x-ray crystallography, in which x-rays shining through a protein crystal reveal the location of atoms.
In this case, wedge-like huts have different ridge structures (the ridge width and location of atoms on it) depending on cluster height.
As expected, the tilt is recognized in an Argand plot (Fig. 4f) by the elongated distribution of the original complex data points (the green dots) that reveal the location of atoms in a different height.
Most "experimental" 3-D coordinates for small molecules provided by the PDB are, in essence, theoretical models derived from fitting electron density produced by X-ray diffraction experiments to the presumed location of atoms that are part of a protein, a ligand (typically bound to the protein), and other moieties (ions, water molecules, etc).
How confident can we be in such fine-scale putative differences in the location of atoms given the actual resolution of the structures?
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