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Anal Chem. 2012 Aug 7;84(15):6317-20. doi: 10.1021/ac301541r. Epub 2012 Jul 18.

Separation of variant methylated histone tails by differential ion mobility.

Abstract

Differential ion mobility spectrometry (field asymmetric waveform ion mobility spectrometry (FAIMS)) is emerging as a broadly useful tool for separation of isomeric modified peptides with post-translational modifications (PTMs) attached to alternative residues. Such separations were anticipated to become more challenging for smaller PTMs and longer peptides. Here, we show that FAIMS can fully resolve localization variants involving a PTM as minuscule as methylation, even for larger peptides in the middle-down range.

PMID:
22812477
PMCID:
PMC3418378
DOI:
10.1021/ac301541r
[Indexed for MEDLINE]
Free PMC Article

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