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New Proteomics Capabilities for Improved Quantitation and Characterization, Thermo Electron
March 2006
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Thermo Electron Corp. unveiled several new additions to its Proteomics suite of solutions. These include Thermo's LTQ Orbitrap hybrid mass spectrometer, the first commercial mass analyzer based on an entirely new detection principle to be introduced to the market in over 20 years.  This hybrid instrument greatly improves protein characterization, accelerates protein database searches and reduces false identification rates. Thermo has also introduced several new approaches to protein quantitation, such as Pulsed-Q Dissociation (PQD), a new fragmentation technique that eliminates the low mass cut-off for ion traps and allows quantitation with iTRAQ labeling reagents. iTRAQ is a stable isotope method for relative protein quantitation using mass spectrometry. In addition, BioWorks software has been extended to facilitate the use of all major protein quantitation techniques, namely SILAC (Stable Isotope Labeling with Amino Acids in Cell Culture), metabolic labeling, iTRAQ and ICAT (Isotope Coding Affinity Tagging).  As a result, SEQUEST protein identifications can now easily be combined with quantitative data for an accurate view of protein expression levels.

Thermo Electron Corp.

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