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Chloramphenicol Der...
Chloramphenicol Derivatives with Antibacterial Activity Identified by Functional Metagenomics
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- Nasrin, Shamima (author)
- Auburn Univ, USA
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- Ganji, Suresh, 1984- (author)
- Univ Mississippi, USA
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- Kakirde, Kavita S. (author)
- Auburn Univ, USA
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- Jacob, Melissa R. (author)
- Univ Mississippi, USA
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- Wang, Mei (author)
- Univ Mississippi, USA
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- Ravu, Ranga Rao (author)
- Univ Mississippi, USA
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- Cobine, Paul A. (author)
- Auburn Univ, USA
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- Khan, Ikhlas A. (author)
- Univ Mississippi, USA
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- Wu, Cheng-Cang (author)
- Lucigen Corp, USA
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- Mead, David A. (author)
- Varigen Biosci Corp, USA
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- Li, Xing-Cong (author)
- Univ Mississippi, USA
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- Liles, Mark R. (author)
- Auburn Univ, USA;Varigen Biosci Corp, USA
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(creator_code:org_t)
- 2018-06-13
- 2018
- English.
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In: Journal of natural products (Print). - : American Chemical Society (ACS). - 0163-3864 .- 1520-6025. ; 81:6, s. 1321-1332
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https://lnu.diva-por... (primary) (Raw object)
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http://lnu.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A functional metagenomic approach identified novel and diverse soil-derived DNAs encoding inhibitors to methicillin-resistant Staphylococcus aureus (MRSA). A metagenomic DNA soil library containing 19 200 recombinant Escherichia coli BAC clones with 100 Kb average insert size was screened for antibiotic activity. Twenty-seven clones inhibited MRSA, seven of which were found by LC-MS to possess modified chloramphenicol (Cm) derivatives, including three new compounds whose structures were established as 1-acetyl-3-propanoylchloramphenicol, 1-acety1-3-butanoyl-chloramphenicol, and 3-butanoyl-1-propanoylchloramphenicol. Cm was used as the selectable antibiotic for cloning, suggesting that heterologously expressed enzymes resulted in derivatization of Cm into new chemical entities with biological activity. An esterase was found to be responsible for the enzymatic regeneration of Cm, and the gene trfA responsible for plasmid copy induction was found to be responsible for inducing antibacterial activity in some clones. Six additional acylchloramphenicols were synthesized for structure and antibacterial activity relationship studies, with 1-p-nitrobenzoylchloramphenicol the most active against Mycobacterium intracellulare and Mycobacterium tuberculosis, with MICs of 12.5 and 50.0 mu g/mL, respectively.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- Mikrobiologi
- Microbiology
- Bioteknik
- Biotechnology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Nasrin, Shamima
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Ganji, Suresh, 1 ...
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Kakirde, Kavita ...
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Jacob, Melissa R ...
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Wang, Mei
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Ravu, Ranga Rao
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show more...
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Cobine, Paul A.
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Khan, Ikhlas A.
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Wu, Cheng-Cang
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Mead, David A.
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Li, Xing-Cong
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Liles, Mark R.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Microbiology
- Articles in the publication
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Journal of natur ...
- By the university
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Linnaeus University