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2008 Volume 1 Issue 1

Mapping the chromatographic behavior of a cell proteome utilizing orthogonal routines: the influence of feedstock pH


Abstract
Surface charge, molecular weight, and folding state are known to influence protein chromatographic behavior onto ion-exchangers. Experimentally, information related to such factors can be gathered via two-dimensional electrophoretic (2-DE) methods. The separation behavior depicted by the insect cultured-cells proteome, which is an important host for recombinant protein production, was explored in this study. Experimental evidence showed a correlation between apparent isoelectric point distributions and the mobile phase conductivity. It was observed that the information contained in the isoelectric point (pI) value(s) obtained with a 2-DE routine showed a good correlation with the IEX chromatographic behavior, for a number of commercial adsorbents. This correlation was observed irrespective of the pH of the feedstock within the range 6 to 8. An initial prediction of protein ion-exchange chromatographic behavior could be possible utilizing an experimental approach based on the mentioned orthogonal methods. This technique is providing information that more closely resembles the separation behaviour observed with a complex biotechnological feedstock.Keywords: Insect cells, proteome, chromatography, ion-exchange, bioprocessingReceived: 3 August 2008 / Received in revised form: 15 August 2008, Accepted: 19 August 2008, Published online: 20 August 2008

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JOURNAL OF BIOCHEMICAL TECHNOLOGY
JOURNAL OF BIOCHEMICAL TECHNOLOGY
Journal of Biochemical Technology is a peer reviewed International Journal published by the Sevas Publishing on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
Areas of high interest, cover new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology” Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative