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Orbitrap_SciLib
Reputable Mentor II
Reputable Mentor II
Olsen JV, Macek B, Lange O, Makarov A, Horning S, Mann M.
Nat Methods. 2007 Sep;4(9):709-12.
Peptide sequencing is the basis of mass spectrometry–driven proteomics. Here we show that in the linear ion trap–orbitrap mass spectrometer (LTQ Orbitrap) peptide ions can be efficiently fragmented by high-accuracy and full-mass-range tandem mass spectrometry (MS/MS) via higher-energy C-trap dissociation (HCD). Immonium ions generated via HCD pinpoint modifications such as phosphotyrosine with very high confidence. Additionally we show that an added octopole collision cell facilitates de novo sequencing.

http://www.nature.com/nmeth/journal/v4/n9/full/nmeth1060.html
Department for Proteomics and Signal Transduction, Max Planck Institute for Biochemistry, Am Klopferspitz 18, D-82131 Martinsried, Germany.
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