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Figure 2
Four common types of tautomerization: keto–enol, amide–imidic acid, lactam–lactim and amine–imine. Note that a lactam is a cyclic amide. Marvin was used to draw chemical structures (https://www.chemaxon.com).

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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