Amino Acid Phosphorylation





Strategies for the Identification of Phosphorylated Amino Acids Using Mass Spectrometry (coming soon)

Amino Acid Residue Composition

Residue Monoisotopic Mass


PhosphoSerine C3H6NPO5 166.9984 97.9769
(Common CID loss)
DehydroAlanine C3H3NO 69.0215
PhosphoThreonine C4H8NPO5 181.0140 .
PhosphoTyrosine C9H10NPO5 243.0296 .


HPO3 79.9663 .
-Masses calculated with the current IUPAC values using the molecular weight calculator IsoPro ver. 3.01.  Please send comments to

at IonSource



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Last updated:  Friday, February 27, 2015 01:13:46 PM