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Mean chemical shifts and standard deviations used for residue type assignment. Data compiled from BRMB as updated on 02/14/2013. (Top) Alpha (grey) and beta (black) carbon shifts. (Bottom) Carbonyl carbon shifts. Rectangles highlight chemical shifts with values characteristic of a given residue type or small group of residue types. Often, chemical shifts of different carbons must be considered together for reside type identification.
