MediaWiki:Sat-tooltip-colors-charge
Sidechains of Lys, Arg, Asp, Glu:
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Cationic +
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Anionic -
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Sidechains of His (pKa 6.0):
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Histidine
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Entire sidechains are colored because sometimes the charged terminal nitrogens or oxygens are absent from the model due to disorder in the crystal.\
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Not colored are charges on nucleic acids and ligands.