XPRESS supports N15 metabolic labeling. I don't think ASAPRatio does
but it's possible that functionality was added recently w/o my
knowledge of it.
You're going to have to run 2 separate searches. One search will
measure the normal (or light) peptides; no modifications are
specified here. The
ASAPRatio has supported N15 for awhile. It does require a really long
commandline, see this thread:
http://groups.google.com/group/spctools-discuss/browse_thread/thread/3be51d7bf8fa36cb/56c8d65c9105865d?lnk=gstq=15N+ASAPRatio+Jake#56c8d65c9105865d
-David
On Thu, Feb 17, 2011 at 12:26 PM, Jimmy
