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  A new set of highly efficient, tag-cleaving proteases for purifying recombinant proteins.

Frey, S., & Görlich, D. (2014). A new set of highly efficient, tag-cleaving proteases for purifying recombinant proteins. Journal of Chromatography A, 1337, 95-105. doi:10.1016/j.chroma.2014.02.029.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-8F80-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-0614-3
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 Creators:
Frey, S.1, Author              
Görlich, D.1, Author              
Affiliations:
1Department of Cellular Logistics, MPI for biophysical chemistry, Max Planck Society, ou_578574              

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Free keywords: Affinity tag, NEDD8, P(1)' promiscuity, SUMO, Salt tolerance, Tag-removing protease
 Abstract: Engineered protein tags that confer specific binding to standardized affinity resins have revolutionized recombinant protein purification. Ideally, these tags should, however, be removed during or following purification to restore an authentic N-terminus. We introduce here a new set of proteases and corresponding protease recognition modules that are optimally suited for this purpose: a SUMO-specific and a NEDD8-specific protease from Brachypodium distachyon (bdSENP1 and bdNEDP1), the NEDP1 protease from Salmo salar (ssNEDP1), Saccharomyces cerevisiae Atg4p (scAtg4) and Xenopus laevis Usp2 (xlUsp2). These new proteases are highly specific and cleave tags from a 50-fold (xlUsp2) to 10,000-fold (bdSENP1) molar excess of substrate per hour at 0°C. They are thus up to 1000-fold more active than TEV protease. The most efficient protease, bdSENP1, is even more active and far more salt tolerant than its yeast ortholog scUlp1, allowing efficient tag removal also in high salt buffers containing, e.g. 1M NaCl. ssNEDP1 is distinguished by an exceptional salt tolerance, and a considerable tolerance toward charged and bulky residues in the P1' position. xlUsp2 is unique in that it can restore, with low efficiency though, an N-terminal proline. As shown in the accompanying paper (S. Frey, D. Görlich, J. Chromatogr. A (2014), http://dx.doi.org/10.1016/j.chroma.2014.02.029), the orthogonality between bdSENP1, NEDP1, scAtg4 and xlUsp2 can be exploited for purifying multi-subunit protein complexes of defined stoichiometry.

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Language(s): eng - English
 Dates: 2014-02-192014-04-11
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.chroma.2014.02.029
 Degree: -

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Title: Journal of Chromatography A
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 1337 Sequence Number: - Start / End Page: 95 - 105 Identifier: -