Ultratrace liquid chromatography/mass spectrometry analysis of large peptides with post-translational modifications using narrow-bore poly(styrene-divinylbenzene) monolithic columns and extended range proteomic analysis.

@article{Zhang2007UltratraceLC,
  title={Ultratrace liquid chromatography/mass spectrometry analysis of large peptides with post-translational modifications using narrow-bore poly(styrene-divinylbenzene) monolithic columns and extended range proteomic analysis.},
  author={Jian Zhang and S Wu and Jeongkwon Kim and Barry L. Karger},
  journal={Journal of chromatography. A},
  year={2007},
  volume={1154 1-2},
  pages={295-307}
}
This paper describes approaches to optimize the chromatographic performance for our recently developed LC-MS platform, extended range proteomic analysis (ERPA), for comprehensive protein characterization at the ultratrace level. Large digested peptide fragments up to 10 kDa (e.g., from lysyl endopeptidase digestion) with or without modifications were well separated with high resolution using narrow bore (20 and 50 microm I.D.) poly(styrene-divinylbenzene) (PS-DVB) monolithic columns constructed… CONTINUE READING