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Wyatt Technology DAWN® HELEOS® MALS Instrument Ensures Protein Reagent Quality in Drug Discovery - Wyatt Technology Corporation, the world leader in absolute macromolecular characterization instrumentation and software, announces that Pfizer Global R&D, has chosen its DAWN® HELEOS® Multi-Angle Light Scattering (MALS) instrument
Wyatt Technology DAWN® HELEOS® MALS Instrument Ensures Protein Reagent Quality in Drug Discovery

 

PRZOOM - /newswire/ - Santa Barbara, CA, United States, 2009/10/06 - Wyatt Technology Corporation, the world leader in absolute macromolecular characterization instrumentation and software, announces that Pfizer Global R&D, has chosen its DAWN® HELEOS® Multi-Angle Light Scattering (MALS) instrument.

   
 
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to monitor protein reagent quality in drug discovery. The instrument’s unmatched analytical capabilities are illustrated in a new application note, titled “Using MALS to Ensure Protein Reagent Quality in Drug Discovery”

Quality and consistency of protein reagents are critical elements to successful drug discovery and development. When targeting a particular protein of interest, the best way to obtain dependable results is to perform different in vitro experiments using a protein with similar biological properties. It is important that molecularity, purity, shape and degree of heterogeneity remain the same regardless of any alterations of the model protein or the formulation buffer. Affinity tags or changes to buffer excipients may also be required.

Traditional characterization techniques, such as plate-based assays and biophysical methods where native proteins are preferred, are not efficient when alterations of solution properties of proteins occur. Crystallization studies, for example, typically have a higher rate of success when the proteins involved are simplified, whether they are truncated or expressed in bacteria to minimize post-translational modifications. MALS overcomes these limitations and has proven a very powerful technique for monitoring solution properties of proteins while changes to reagents are taking place.

The new application note demonstrates how light scattering data can be used to elucidate the solution properties of a protein expressed from two different constructs. The first construct was the shorter of the two, designed for crystallization studies. Experimental results, combined with the fact that the enzyme showed activity and was the predominant species in mass spectrometry, would lead to the erroneous confirmation of the suitability of the reagent. The DAWN HELEOS MALS data, however, showed that the enzyme was very heterogeneous. The second construct, which was designed to address this problem, was the full-length enzyme. In that case, the DAWN HELEOS demonstrated that the protein was in its biologically active form (dimer) and was highly homogenous. This information provided confidence to the project team at Pfizer to move forward with the second construct for crystallography, NMR and HTS studies.

To find out more about the DAWN HELEOS or to obtain a copy of the new application note, please email info[.]wyatt.com

About Wyatt
Based in Santa Barbara, California, Wyatt Technology (wyatt.com) is the world’s leading provider of instruments for absolute macromolecular characterization. With over 40 years’ experience developing multi-angle light scattering detectors, working with customers in the biotechnology, chemical, petrochemical, pharmaceutical, academic and government arenas, Wyatt prides itself on its entrepreneurial spirit, and the uniqueness of its offerings. The Company’s groundbreaking technology and uncompromising levels of customer care make Wyatt the global hallmark in its field.

 
 
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Wyatt Technology DAWN® HELEOS® MALS Instrument Ensures Protein Reagent Quality in Drug Discovery

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