we are in the process of running short (10-15 residue) purified phosphopeptides
on MALDI-TOF. We are seeing the predicted mass and also a mass which is 104Da
less. Can anyone advise us on the possible identity of the second species?
Thank you
Kathryn
Dr.K.S.Lilley
PNACL
Hodgkin Building
University of Leicester
Lancaster Rd
Leicester
UK