Intact non-reduced antibody characterization

Get deep structural insight to complex proteins and protein interactions

The complexity of modern therapeutic proteins, such as antibody-drug conjugates (ADCs), presents a significant analytical challenge requiring high resolution chromatography combined with high resolution mass spectrometry. ADCs involving cysteine conjugation present a unique challenge for characterization as proper intact analysis requires native mass spectrometry conditions to preserve structurally-critical non-covalent binding between antibody chains. Intact protein analysis under native mass spectrometric conditions can now be performed routinely using mass spec compatible buffers together with size exclusion (SEC) or ion exchange chromatography (IEC) coupled to Q Exactive BioPharma series mass spectrometers.

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Native intact mass analysis workflow

Native Intact Mass Analysis workflow
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Featured chromatography solutions for native intact mass

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Orbitrap mass spectrometers for native intact mass analysis

  Orbitrap Exploris 480 Mass Spectrometer Orbitrap Eclipse Tribrid Mass Spectrometer Q Exactive UHMR Q Exactive BioPharma Platform
  Orbitrap Exploris 480 Mass Spectrometer Orbitrap Eclipse Tribrid Mass Spectrometer Orbitrap Fusion Lumos Tribrid Mass Spectrometer Q Exactive BioPharma Platform
Advantages Extraordinary simplified within a compact footprint where next level exploration delivers richer insights gained with intact protein analysis under native mass spectrometric conditions, empowering all by bringing performance and intelligence together. Go beyond today's discovery with new innovations that deliver the ultimate flexibility to expand experimental scope, with built-in intelligence to ensure the highest data quality and confidence with intact protein analysis under native mass spectrometric conditions. Go beyond what you thought possible with an outstanding tool for investigating the higher order structure, native-like tertiary and quaternary protein structures with a high resolution accurate mass and an ability to analyze ultrahigh mass range. Realize complete BioPharma characterization with distinct operational modes optimized for the top three protein characterization workflows and a high mass range (HMR) mode for native MS analysis ideal for antibody drug conjugates and other heterogeneous antibody samples.
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Resolving power 480,000 at m/z 195 7,500-500,000 FWHM at m/z 200 (1M option) 200,000 FWHM at m/z 400 (1M option) Up to 240,000 at m/z 200
Scan speed Up to 40Hz Up to 40Hz 12Hz at resolution setting of 12,500 at m/z 400 18Hz
Mass range 40 to 6,000 m/z (up to 8,000 m/z with the BioPharma option) 50 to 6,000 (up to 8,000 with HMRn) 350 to 80,000 50 to 8,000 m/z
Dynamic range >5000:1 >5000 with a single OTMS spectrum >5,000 with a single OTMS spectrum >5000:1
Mass accuracy Internal <1 ppm RMS; External: <3 ppm RMS Internal <1 ppm RMS; External: <3 ppm RMS Internal <1 ppm RMS; External: <3 ppm RMS Internal <1 ppm RMS; External: <3 ppm RMS

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Boost selectivity and enhance your proteomics workflow with FAIMS Pro Interface

High-Field Asymmetric waveform Ion Mobility Spectrometry (FAIMS) can be used to optimize ion selectivity and reduce chemical backgrounds during mass spectrometry assays. FAIMS successfully prevents interferences from co-eluting compounds and increases signal to noise ratios by 100-fold or higher.

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Featured software for native intact mass analysis


Three ways to spend less and get more

Affordability made easy

Interested in financing options, purchasing a factory-certified refurbished LC-MS instrument or trading-in your existing mass spectrometer for something better? Choose from a wide selection of high performance systems from the most routine, for all levels of experience, to the most sophisticated and advanced research. We can get you to greater productivity at an affordable price.

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Watch videos on native intact mass analysis


Featured intact protein analysis resource
Intact and Native Characterization webinars
Intact and Native Characterization webinars

Join experts from Genentech and Thermo Fisher to get great structural insight into your drug product using the Q Exactive BioPharma platform of mass spectrometers.

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