Document Detail

The effect and potential of using a temperature controlled separation column with ultra-high pressure microcapillary liquid chromatography/tandem mass spectrometry on proteomic analysis.
MedLine Citation:
PMID:  21431206     Owner:  NLM     Status:  Publisher    
The microcapillary liquid chromatography (µLC)/tandem mass spectrometry (MS/MS) system has become a prevailing analytical platform in proteomics. Typical proteomic studies aimed at proteome-wide identification of peptides and proteins rely heavily on producing an accurate and reproducible solvent-composition gradient throughout microcapillary separation columns to improve LC separation. With the recent advent of targeted proteomic approaches utilizing the LC retention time as a physicochemical parameter for peptides, high reproducibility of LC separation additionally becomes an important factor. In this study, column temperature elevation is utilized to improve reproducibility and separation efficiency of the µLC-MS/MS system. The simple incorporation of a semi-rigid gas line heater allowed precise control of the temperature of microcapillary columns longer than 70 cm, up to 60 °C. Tryptic enolase peptides were used as a standard sample to evaluate the effect of the controlled temperature elevation on the peptide separation efficiency and reproducibility. In addition to the increased reproducibility in peptide elution time due to the controlled column temperature, the temperature elevation resulted in a decrease in the column operation pressure, which, in turn, allowed a higher solvent flow-rate to be employed using the same LC pumps, leading to further improvements in the performance of µLC systems.
Seok-Won Hyung; Min-Sik Kim; Dong-Gi Mun; Hookeun Lee; Sang-Won Lee
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-24
Journal Detail:
Title:  The Analyst     Volume:  -     ISSN:  1364-5528     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372652     Medline TA:  Analyst     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Chemistry, Research Institute for Natural Sciences, Korea University, 1, 5-ka, Anam-dong, Seongbuk-gu, Seoul, 136-701, Korea.
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