Coupling Multi Angle Light Scattering to Ion Exchange chromatography (IEX-MALS) for protein characterization

Hadar Amartely, Orly Avraham, Assaf Friedler, Oded Livnah, Mario Lebendiker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Multi-Angle light scattering coupled with size exclusion chromatography (SEC-MALS) is a standard and common approach for characterizing protein mass, overall shape, aggregation, oligomerization, interactions and purity. The limited resolution of analytical SEC restricts in some instances the accurate analysis that can be accomplished by MALS. These include mixtures of protein populations with identical or very similar molecular masses, oligomers with poor separation and short peptides. Here we show that combining MALS with the higher resolution separation technique ion exchange (IEX-MALS) can allow precise analyses of samples that cannot be resolved by SEC-MALS. We conclude that IEX-MALS is a valuable and complementary method for protein characterization, especially for protein systems that could not be fully analyzed by SEC-MALS.

Original languageAmerican English
Article number6907
JournalScientific Reports
Volume8
Issue number1
DOIs
StatePublished - 1 Dec 2018

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© 2018 The Author(s).

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