Mass difference of -60.7?

Luc CAMOIN camoin at cochin.inserm.fr
Mon Apr 30 10:27:22 EST 2001


I have a synthetic peptide of 28 AA's. I run different cleavage and then
separation of the resulting fragments on reverse phase HPLC in H2O/CH3CN
gradient including 0.1%TFA.  Then the fractions were lyophilized.
When I run the mass spect, I found some fragments showing a doublet at mass
N for the major peaks and N -60.7 for the minor peaks. What could this -60.7

Does anyone have any explanation about this -60.7?

Thanks in advance


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