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Improving Protein Sequence Coverage and Identification of Modification Sites via Top/Middle-Down Fragmentation and Ion-mobility Time-of-flight Mass Spectrometry

Waters

Improving Protein Sequence Coverage and Identification of Modification Sites via Top/Middle-Down Fragmentation and Ion-mobility Time-of-flight Mass Spectrometry

3 Jun 2015

This application note demonstrates the use of developed UNIFI workflow in top/middle-down analysis to characterize Trastuzumad (Tmab) sub-units on a Xevo G2-XS quadrupole time-of-flight mass spectrometer. It also simplifies the terminal sequence confirmation of protein analysis using ion mobility separation (IMS) of the product ions.

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LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Mass SpectrometryMass spectrometry (MS) is a powerful analytical technique used to identify and quantify molecules based on the mass-to-charge ratio of gas-phase ions. It provides detailed information about the structure, composition, and properties of compounds and is widely used across fields such as environmental monitoring, materials science, drug discovery and development, food and beverage testing, and wider chemical research. Key MS techniques include tandem mass spectrometry (MS/MS), liquid chromatography–mass spectrometry (LS-MS) and inductively coupled plasma (ICP-MS). Choosing from these wide range of techniques and technologies can be a daunting task, so keep up to date with scientific applications, performance expectations, and customer reviews here all in one place. Visit our product directory to receive quotes direct from the manufacturer. Protein BiologyThe analysis of protein expression, identity and function is vital for many areas of life science research and drug discovery. Some of the most commonly used techniques in protein analysis include Western blotting, electrophoresis and mass spectrometry.Ion Mobility SpectrometryASMSThe American Society for Mass Spectrometry (ASMS) is an organization dedicated to advancing the science and application of mass spectrometry. ASMS supports professionals through events, publications, and research initiatives, promoting innovation in areas like proteomics, metabolomics, and environmental analysis.

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