| Literature DB >> 21863819 |
Alexandre A Shvartsburg, Andrew J Creese, Richard D Smith, Helen J Cooper.
Abstract
Protein identification in bottom-up proteomics requires disentangling isomers of proteolytic peptides, a major class of which are sequence inversions. Their separation using ion mobility spectrometry (IMS) has been limited to isomeric pairs. Here we demonstrate baseline separation of all seven 8-mer tryptic peptide isomers using differential IMS. Evaluation of peak capacity implies that even larger libraries should be resolved for heavier peptides with higher charge states.Entities:
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Year: 2011 PMID: 21863819 PMCID: PMC3173593 DOI: 10.1021/ac201640d
Source DB: PubMed Journal: Anal Chem ISSN: 0003-2700 Impact factor: 6.986