NDLI: Expression of recombinant hybrid peptide hinnavin II/α-melanocyte-stimulating hormone in Escherichia coli: Purification and characterization

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Journal of Microbiology : Volume 47

Journal of Microbiology : Volume 46

Expression of recombinant hybrid peptide hinnavin II/α-melanocyte-stimulating hormone in Escherichia coli: Purification and characterization

Content Provider	Springer Nature Link
Author	Bang, Son Kwon Kang, Chang Soo Han, Man Deuk Bang, In Seok
Copyright Year	2010
Abstract	The increasing problem of antibiotic resistance among pathogenic bacteria requires novel strategies for the construction of multiple, joined genes of antimicrobial agents. The strategy used in this study involved synthesis of a cDNA-encoding hinnavin II/α-melanocyte-stimulating hormone (hin/MSH) hybrid peptide, which was cloned into the pET32a (+) vector to allow expression of the hybrid peptide as a fusion protein in Escherichia coli BL21 (DE3). The resulting expression of fusion protein Trx-hin/MSH could reach up to 20% of the total cell proteins. More than 50% of the target protein was in a soluble form. The target fusion protein from the soluble fraction, Trx-hin/MSH, was easily purified by Ni$^{2+}$-chelating chromatography. Then, enterokinase cleavage effectively cleaved the Trx-hin/MSH to release the recombinant hin/MSH (rhin/MSH) hybrid peptide. After removing the contaminants, we purified the recombinant hybrid peptide to homogeneity by reversed-phase FPLC and obtained 210 mg of pure, active rhin/MSH from 800 ml of culture medium. Antimicrobial activity assay demonstrated that rhin/MSH had a broader spectrum of activity than did the parental hinnavin II or MSH against fungi and Gram-positive and Gram-negative bacteria. These results suggest an efficient method for producing high-level expression of various kinds of antimicrobial peptides that are toxic to the host, a reliable and simple method for producing different hybrid peptides for biological studies.
Starting Page	24
Ending Page	29
Page Count	6
File Format	PDF
ISSN	12258873
Journal	Journal of Microbiology
Volume Number	48
Issue Number	1
e-ISSN	19763794
Language	English
Publisher	The Microbiological Society of Korea
Publisher Date	2010-03-11
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	antimicrobial peptide hinnavin α-melanocyte stimulating hormone (MSH) hybrid peptide fusion expression Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology Applied Microbiology and Biotechnology

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