Malvern Zetasizer APS delivers unattended protein screening for SARomics Biostructures

08:48 EST 5 Dec 2014 | BioPortfolio

4 December 2014: Malvern, UK: An automated dynamic light scattering system from Malvern Instruments has become established as an essential part of the analytical toolkit used by SARomics Biostructures AB, a leading provider of protein 3D structure determination and structure-based drug design services. The Zetasizer APS automated plate sampling system is supporting the systematic study of the aggregation behavior of proteins, a fundamental component of the services provided by SARomics Biostructures. The company, which is based in Lund, Sweden within the biotech cluster of the Medicon Valley, is a research-intensive organization with clients around the world.

The Zetasizer APS is a robust, simple-to-operate system that uses laser light scattering to determine a number of parameters associated with protein conformation and stability. It integrates a plate sampling system and measurement unit into a single instrument, automating the measurement of samples in industry standard 96- or 384-well plates on as little as 20 μL of recoverable sample.

Dr Maria Håkansson is the MAX-lab Crystallization Facility Manager and Senior Scientist at SARomics Biostructures. She is one of a number of people within the company to use the Zetasizer APS. “Our primary use of the Zetasizer APS is in screening protein preparations to ensure they are monodisperse and therefore suitable for crystallization,” said Dr Håkansson. “If we find aggregated proteins, then crystallization trials are unlikely to be successful and we know we need to adjust the preparation process. We’ve been running the Zetasizer APS continuously since 2012 and the real beauty is that we simply load the samples in multiwell plates, leave it to run, even overnight, and go back and pick up the results. The system is easy to use, requires little training and, most importantly, the measurements and data are excellent.”

The team at SARomics also uses the Zetasizer APS in other protein screening applications. To screen protein constructs, for example, to check their size and aggregation status, with 20-30 duplicate samples being run routinely. Stability screening of single constructs in a range of buffers is also done to assist with selecting appropriate buffers for crystallization trials. In addition, the Zetasizer APS is used in conjunction with differential scanning fluorimetry to determine protein melting points, the results of which can be correlated with light scattering.

The full automation and low sample requirements of the Zetasizer APS make it ideal for early stage screening. Dual, independent temperature controls for both the plate holder and measurement cell ensure that samples are fully protected throughout the measurement cycle, in order to deliver high accuracy and reproducible results.

For more information about the Zetasizer APS go to
To learn more about SARomics Biostructures AB visit

Malvern, Malvern Instruments and Zetasizer are registered trademarks of Malvern Instruments Ltd

CAPTION: Dr Maria Håkansson, MAX-lab Crystallization Facility Manager and Senior Scientist at SARomics Biostructures, prepares protein samples for screening with the Zetasizer APS which is pictured in the background. A high resolution product image is also available via the email address above.

About Malvern Instruments

Malvern provides the materials and biophysical characterization technology and expertise that enables scientists and engineers to understand and control the properties of dispersed systems. These systems range from proteins and polymers in solution, particle and nanoparticle suspensions and emulsions, through to sprays and aerosols, industrial bulk powders and high concentration slurries. Used at all stages of research, development and manufacturing, Malvern’s materials characterization instruments provide critical information that helps accelerate research and product development, enhance and maintain product quality and optimize process efficiency.

Our products reflect Malvern’s drive to exploit the latest technological innovations and our commitment to maximizing the potential of established techniques. They are used by both industry and academia, in sectors ranging from pharmaceuticals and biopharmaceuticals to bulk chemicals, cement, plastics and polymers, energy and the environment.

Malvern systems are used to measure particle size, particle shape, zeta potential, protein charge, molecular weight, mass, size and conformation, rheological properties and for chemical identification, advancing the understanding of dispersed systems across many different industries and applications.

Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, China, Japan and Korea, a joint venture in India, a global distributor network and applications laboratories around the world.

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For press information, please contact: Trish Appleton, Kapler Communications Phoenix House, Phoenix Park, Eaton Socon, Cambridgeshire, PE19 8EP, UK Tel: +44 (0)1480 471059 Fax: +44 (0)1480 471069 USA contact: Marisa Fraser, Malvern Instruments Inc. 117 Flanders Road, Westborough, MA 01581-1042 USA Tel: +1 508 768 6400 Fax: +1 508 768 6403 Please send sales enquiries to: Alison Vines, Malvern Instruments Ltd Enigma Business Park, Grovewood Road, Malvern, Worcestershire WR14 1XZ UK Tel: +44 (0) 1684 892456; Fax: +44 (0) 1684 892789 NEXT ARTICLE

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