Extraction of recombinant proteins from Escherichia coli by cell disruption with aqueous solutions of surface-active compounds
authors Martins, M; Ooi, CW; Neves, MC; Pereira, JFB; Coutinho, JAP; Ventura, SPM
nationality International
journal JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
author keywords green fluorescent protein; recombinant proteins; extraction; intracellular protein; surface-active compounds; cell disruption
keywords GREEN FLUORESCENT PROTEIN; GFP-FUSION PROTEINS; MICELLAR 2-PHASE SYSTEMS; IONIC LIQUIDS; PURIFICATION; COLUMN; CHROMATOGRAPHY; IMPACT
abstract BACKGROUNDGreen fluorescent protein (GFP) is used extensively as a biomarker due to its unique spectral and fluorescence characteristics. GFP is usually obtained from recombinant strains of Escherichia coli (E. coli) producing the protein intracellularly. However, the common methods of extraction are cumbersome leading to an increase in the downstream process costs and complexity, sometimes leading to a higher risk of biomolecule degradation. RESULTSThis work proposes a new method to extract recombinant intracellular GFP from E. coli BL21 by using aqueous solutions of surface-active compounds. CONCLUSIONBy comparing the fluorescence intensity of the extracted GFP, it was concluded that some of these compounds, namely ionic liquids with an alkyl chain of 10 or more carbons (best solvent being tributyl-1-tetradecylphosphonium, [P-4,P-4,P-4,P-14]Cl) are more effective than an ultrasonic-assisted extraction, even at low concentrations, being able to extract the whole GFP content from the cells. (c) 2018 Society of Chemical Industry
publisher WILEY
issn 0268-2575
year published 2018
volume 93
issue 7
beginning page 1864
ending page 1870
digital object identifier (doi) 10.1002/jctb.5596
web of science category Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Environmental; Engineering, Chemical
subject category Biotechnology & Applied Microbiology; Chemistry; Engineering
unique article identifier WOS:000435087800006
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journal impact factor 2.587
5 year journal impact factor 2.734
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