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Posted by John Cottrell (February 16, 2016)

Selenocysteine

David Fenyƶ and Ron Beavis have a short paper in J. Proteome Research that draws attention to a potential problem with peptides containing selenocysteine (1-letter code U, 3-letter code Sec). Samples are frequently alkylated, yet modified U is unlikely to be considered in the search. This need not be an issue for Mascot searches, but you may have no modifications [...]

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