Several of you have mentioned that the Perseptive resins are faulty, is this the nature of the PEG-PS resin or is the problem specific to Perseptive? We did have some Gly-PEG-PS which appeared either not to be capped, or the gly had fallen off over time and we saw a large population of Gly deleted peptides. Perseptive has relpaced this resin for me but I am concerned that it will happen again. Is there another more reliable source for these resins?
Once again, thanks for everyone's input. I will keep those of you who asked posted on how the DCM wash works out.
Jane Nagel, MSc
Genetics Institute
87 Cambridge Park Drive
Cambridge MA 02139
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