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Table 3 Identified FMRpolyG proteotypic peptides

From: Composition of the Intranuclear Inclusions of Fragile X-associated Tremor/Ataxia Syndrome

Sequence Modifications Observed m/z Charge Theoretical Mass (Da) Spectral Counts (MS/MS)
FMRpolyG-GFP (recombinant) Native FXTAS Inclusions Native FXTAS SUMO-IP
MEAPLPGGVR Acetyl (+42) 534.78 2 1068.54 1 - -
  Acetyl (+42)
Oxidation (+16)
542.78 2 1084.54 - 1 -
EAPLPGGVR   448.25 2 895.50 - 1 -
SPPLGGGLPALAGLK   674.40 2 1347.80 3 1 2
SPPLGGGLPALAGLKR   501.97 3 1503.90 1 - -
CGAPMALSTR Carbamidomethyl (+57) 532.25 2 1063.50 1 - -
  Carbamidomethyl (+57)
Ammonia-loss (-17)
523.74 2 1046.50 1 - -
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