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Fusing an Insoluble Protein to GroEL Apical Domain Enhances Soluble Expression in Escherichia coli

Published

Author(s)

Prasad Reddy, William Brad O'Dell

Abstract

A protocol for increasing soluble protein expression by fusing the chaperone GroEL apical domain with a gene of interest is described herein. GroEL apical domain, the minichaperone that functions independently of GroES and ATP in protein folding, is cloned downstream of the lambda CII ribosome binding site in the parent pRE vector. The pRE vector has tightly controlled transcription suitable for expressing toxic proteins. The GroEL minichaperone is fused to a glycine–serine rich linker followed by the enterokinase protease recognition sequence. A number of genes that are recalcitrant to protein production in the parent pRE vector were cloned into the pRE:GroEL fusion vector and successfully expressed as fusion proteins in Escherichia coli.
Citation
Methods in Enzymology Volume 659: Recombinant Protein Expression: Prokaryotic hosts and cell free systems
Volume
659
Publisher Info
Elsevier, Philadelphia, PA

Keywords

pRE recombinant plasmid, GroEL minichaperone, fusion protein expression, soluble protein production

Citation

Reddy, P. and O'Dell, W. (2021), Fusing an Insoluble Protein to GroEL Apical Domain Enhances Soluble Expression in Escherichia coli, Methods in Enzymology Volume 659: Recombinant Protein Expression: Prokaryotic hosts and cell free systems, Elsevier, Philadelphia, PA, [online], https://doi.org/10.1016/bs.mie.2021.09.002, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933220 (Accessed April 18, 2024)
Created October 29, 2021, Updated November 29, 2022