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Proteomics. 2003 Jun;3(6):847-50.

Shotgun collision-induced dissociation of peptides using a time of flight mass analyzer.

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The Institute for Systems Biology, Seattle, WA 98105, USA.


Parallel collision-induced dissociation (CID) of peptides rather than serial, as is customary, results in loss of the obvious parent-fragment ion lineage available from CID on a single ion. We report proof-of-principle results suggesting the feasibility of parallel peptide CID, referred to here as shotgun CID, for protein identification when using the measured mass accuracies available from a time of flight mass analyzer and currently available search routines such as SEQUEST. Additionally, we report that parent-fragment ion lineage may be reconstructed from information encoded in the chromatographic single ion current traces of peptides.

[Indexed for MEDLINE]

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