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. Author manuscript; available in PMC: 2007 Jan 12.
Published in final edited form as: J Biol Chem. 2006 Sep 12;281(45):34537–34548. doi: 10.1074/jbc.M606654200

TABLE 5.

Phosphopeptides identified by reflectron mode MALDI-MS from Phos Select beads enrichment

MH+IMACa MH+APb Sequence No. of phosphorylated residues
1437.6142 1357.6771 TNTSMVPGSPPNR 1
1453.6133 1373.6526 TNTSM(O)VPGSPPNR 1
1661.7117 1581.8531 RASSAAATSIDKEFK 1
1789.8920 1709.9478 RASSAAATSIDKEFKK 1
2024.8356 1944.9265 IDVSNDVHSLGNSDTESR 1
2181.0210 2100.9732 IDVSNDVHSLGNSDTESRR 1
2452.1948 2372.1848 IVSKIDVSNDVHSLGNSDTESR 1
2608.2430 2528.2985 IVSKIDVSNDVHSLGNSDTESRR 1
2705.2529 2625.2586 NSETTGSLSPTESSTTTPP(OH)DSVEER 1
2889.3761 2809.3719 TNTSM(O)VPGSPPNRTLDNFDSEITSGR 1
3037.4349 2937.4515 TNTSM(O)VPGSPPNRTLDNFDSEITSGRK 1
a

Protonated molecular mass of the phospho-form of peptide.

b

Protonated molecular mass of the dephosphorylated peptide.