Skip to main content
. Author manuscript; available in PMC: 2017 Aug 16.
Published in final edited form as: Anal Chem. 2016 Aug 8;88(16):8158–8165. doi: 10.1021/acs.analchem.6b01901

Scheme 1.

Scheme 1

(a) Proposed mechanism for charge-directed neutral loss of phosphate for an unmodified phosphopeptide.16 Proposed competing dissociation pathways for FBDSA-labeled phosphopeptides with (b) and without (c) sulfonate-modulated suppression of charge-directed neutral loss of phosphate.