When using mass spectrometry analysis software we use carbonylation as a fixed modification. What is the significance of this modification and why doesn't it change?

  • $\begingroup$ which MS method are you using ? $\endgroup$ – WYSIWYG Feb 24 '15 at 17:44
  • $\begingroup$ We are using dda on a high res lc- ms $\endgroup$ – I-heart-XBP1 Feb 24 '15 at 20:40

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