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Easy and efficient protocol for purification of recombinant peptides
Published in
2014
PMID: 24361637
Volume: 95
   
Pages: 129 - 135
Abstract
Peptide synthesis and purification remains a challenge. Low abundance leads to small yields when peptides are purified from natural sources. On the other hand, synthetic methods are limited by the chemical properties of the amino acids and the concurrent aggregation of peptides. In this paper, we report a versatile, high yielding and general purification method for randomly chosen recombinant peptides of variable sizes (ranging from ∼1.7 kDa to ∼10 kDa). Expressed as fusion proteins with commonly used tag proteins, these peptides are cleaved by 'PreScission protease' in a volatile buffer that makes concentration and recovery of the peptide easy. Separation of the cleaved peptide is achieved by selective precipitation of the larger tag protein with acetonitrile; leaving the peptide in solution. Our protocol can be used to generate a wide variety of peptides in significant quantities for biochemical, biophysical and physiological studies. © 2013 Elsevier Inc. All rights reserved.
About the journal
JournalProtein Expression and Purification
ISSN10465928
Open AccessNo
Concepts (29)
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    Acetonitrile
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    Acetonitrile derivative
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    GLUTATHIONE TRANSFERASE
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    Hybrid protein
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    Peptide
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    PEPTIDE HYDROLASE
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    Animal
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    Article
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    Biotechnology
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    Chemistry
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    Escherichia coli
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    GLUTATHIONE S-TRANSFERASE (GST)
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    Human
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    Isolation and purification
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    Metabolism
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    PRESCISSION PROTEASE
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    Rat
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    VOLATILE BUFFER
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    GLUTATHIONE S-TRANSFERASE (GST)
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    Peptides
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    PRESCISSION PROTEASE
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    VOLATILE BUFFER
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    Acetonitriles
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    Animals
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    GLUTATHIONE TRANSFERASE
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    Humans
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    Peptide hydrolases
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    Rats
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    Recombinant fusion proteins