TITLE

Prospects for monolithic nano-LC columns in shotgun proteomics

AUTHOR(S)
Guryča, Vilém; Kieffer-Jaquinod, Sylvie; Garin, Jerôme; Masselon, Christophe
PUB. DATE
December 2008
SOURCE
Analytical & Bioanalytical Chemistry;Dec2008, Vol. 392 Issue 7/8, p1291
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a premier side-by-side comparison of two leading types of monolithic nano-LC column (silica-C18, polystyrene) in shotgun proteomics experiments. Besides comparing the columns in terms of the number of peptides from a real-life sample ( Arabidopsis thaliana chloroplast) that they identified, we compared the monoliths in terms of peak capacity and retention behavior for standard peptides. For proteomics applications where the mobile phase composition is constrained by electrospray ionization considerations (i.e., there is a restricted choice of ion-pairing modifiers), the polystyrene nano-LC column exhibited reduced identification power. The silica monolith column was superior in all measured values and compared very favorably with traditional packed columns. Finally, we investigated the performances of the monoliths at high flow rates in an attempt to demonstrate their advantages for high-throughput identification.
ACCESSION #
35354223

 

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