Research Paper Volume 11, Issue 16 pp 6449—6468

Figure 2. Representative MS/MS spectra of phosphopeptides. (A) ²ADELS*EK⁸ ([M + 2H]²⁺, m/z = 609.28284, S* = phosphorylated serine residue) derived from CAV1 (Swiss-Prot No.: C9JKI3). (B) ²AS*GVAVSDGVIK¹³ ([M + 2H]²⁺, m/z = 764.89862, S* = phosphorylated serine residue) derived from CFL1 (Swiss-Prot No.: E9PS23). (C) ⁴¹⁹KAEDS*DS*EPEPEDNVR⁴³⁴ ([M + 3H]³⁺, m/z = 862.37878, S* = phosphorylated serine residue) derived from XRN2 (Swiss-Prot No.: B4E0B9).