ArticleProtein science : a publication of the Protein Society2008
An improved SUMO fusion protein system for effective production of native proteins.
Article in Protein science : a publication of the Protein Society, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.
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56 citing papers in PubMed, 130 citations in OpenAlex.
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- Expression of Antimicrobial Peptide (AMP), Cecropin B, in a Fused Form to SUMO Tag With or Without Three-Glycine Linker in Escherichia coli and Evaluation of Bacteriolytic Activity of the Purified AMP.Probiotics and antimicrobial proteins · 2021Article
- Production of an Antibody Fragment (scFv) Targeting PcrV Protein of Pseudomonas aeruginosa in Fed-Batch Cultivation ModeIranian biomedical journal · 2021Article
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Authors and funding
8 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Expression of recombinant proteins as fusions with SUMO (small ubiquitin-related modifier) protein has significantly increased the yield of difficult-to-express proteins in Escherichia coli. The benefit of this technique is further enhanced by the availability of naturally occurring SUMO proteases, which remove SUMO from the fusion protein. Here we have improved the exiting SUMO fusion protein approach for effective production of native proteins. First, a sticky-end PCR strategy was applied to design a new SUMO fusion protein vector that allows directional cloning of any target gene using two universal cloning sites (Sfo1 at the 5'-end and XhoI at the 3'-end). No restriction digestion is required for the target gene PCR product, even the insert target gene contains a SfoI or XhoI restriction site. This vector produces a fusion protein (denoted as His(6)-Smt3-X) in which the protein of interest (X) is fused to a hexahistidine (His(6))-tagged Smt3. Smt3 is the yeast SUMO protein. His(6)-Smt3-X was purified by Ni(2+) resin. Removal of His(6)-Smt3 was performed on the Ni(2+) resin by an engineered SUMO protease, His(6)-Ulp1(403-621)-His(6). Because of its dual His(6) tags, His(6)-Ulp1(403-621)-His(6) exhibits a high affinity for Ni(2) resin and associates with Ni(2+) resin after cleavage reaction. One can carry out both fusion protein purification and SUMO protease cleavage using one Ni(2+)-resin column. The eluant contains only the native target protein. Such a one-column protocol is useful in developing a better high-throughput platform. Finally, this new system was shown to be effective for cloning, expression, and rapid purification of several difficult-to-produce authentic proteins.
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