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Figure 2
Illustration of map quality for each type of amino-acid side chain. The individual panels show the visualization of map density for representative examples of each of the 20 standard amino acids, which are grouped into neutral (nonpolar and polar), basic and acidic categories. Density contribution from hydrogens is visible in the side chains.

IUCrJ
Volume 7| Part 4| July 2020| Pages 639-643
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520006855