Life Sciences Mass Spectrometry eNewsletter
Critical Mass Issue 29
Nov 2006
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 Tip of the Month: Rejection of Unassigned Charged States  
Unassigned charge states can be skipped in Data Dependent experiments. The benefit of skipping unassigned charge states is that more of the linear trap duty cycle is devoted to scanning of ions of interest.
See How 

 Webinar: EQuan™ System for Environmental and Drinking Water Analysis  
EQuan is a turnkey system incorporating the TSQ Quantum™ for the analysis of pesticides, herbicides, antimicrobials, antibiotics and other pharmaceuticals in environmental and drinking water samples. Join this webinar to learn about EQuan’s unique on-line sample enrichment technique that significantly reduces analysis time – from days to minutes – while still giving you the sensitivity and specificity required. Presented by Jonathan Beck, Ph.D., this webinar includes an explanation of the EQuan system, plus real-life data from EQuan customers, including the Laboratoire Department de L’eau in Toulouse, France.
View Webinar Now [25 Mins.] 

 Proteomics: High-Throughput Quantitative Proteomics on a Triple Quad  
A common endpoint for a biomarker discovery experiment is a list of putative marker proteins. A reasonable next step is to then perform targeted quantitative measurements of these proteins in an expanded patient population to assess their validity as markers. Analytical accuracy and precision are required for unambiguous quantitative analysis of targeted proteins from very complex mixtures. Wide dynamic range and high sensitivity are critical for detecting low abundance proteins. One approach for this application is the use of tandem mass spectrometry to...
Download Full Article [PDF 345 kB] 

 Proteomics Resource Library 2.2  
The Proteomics Resource Library 2.2 is now available. This release of the library includes proteomics technical content from:
- ASMS 2005/2006
- ABRF 2005/2006
- HUPO 2005/2006
- IMSC 2006
- 2005/2006 Proteomics Seminar Presentations
- 2005/2006 Proteomics Application Notes
Request your Resource Library Now 

 Software Update  
Starting with the current issue of Critical Mass, we will be featuring a section titled "Software Update" providing you information about the latest software releases from Life Sciences Mass Spectrometry at Thermo Scientific. Please contact your local sales representative regarding questions on how to upgrade your software. We hope this will help you keep up-to-date with the latest software releases.
Note: This list is subject to change without notice as our software is continuously being updated and improved.
See the latest Software Update Information Now 

 Drug Discovery: Mechanisms of Ion Formation for Famotidine and Azithromycin  
Famotidine is in a class of medications called histamine H2-receptor antagonists and is being used to treat ulcers and gastroesophageal reflux disease. Azithromycin (Zythromax) is a semi-synthetic macrolide antibiotic which is effective against a wide variety of bacteria organisms. Azithromycin has a long half-life allowing for once a day dosing and for shorter treatment courses for most infections. Mass spectrometry has...
Download Full Article [PDF 306 kB] 

 LCQ Trade-In Promotion  
Get the most out of your LCQ asset by trading-in and trading-up to the latest linear ion trap technology. Don't miss out on this limited time promotional trade-in offer. Trade in your LCQ regardless of condition or LCQ model, and receive a significant trade-in discount on the exciting LXQ or LTQ XL Linear Ion Trap.*
Learn More 

 Trap Talk: Optimization of Parameters for Performing ETD on 2D Traps  
Electron transfer dissociation (ETD) on a linear ion trap has been demonstrated to be an extremely powerful dissociation technique for characterization of larger multiply charged peptide and proteins. In implementing the ETD technique, there are many parameters, which must be considered in order to optimize its performance and produce informative, interpretable data. These parameters include those associated with forming and delivering the reagent ions, storing the reagent and analyte ions simultaneously, and the ion-ion reaction conditions.
Download Full Article [PDF 596 kB] 

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 Additional Information
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