Title |
Expanding the Genetic Code of Lactococcus lactis and Escherichia coli to Incorporate Non-canonical Amino Acids for Production of Modified Lantibiotics
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Published in |
Frontiers in Microbiology, April 2018
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DOI | 10.3389/fmicb.2018.00657 |
Pubmed ID | |
Authors |
Maike Bartholomae, Tobias Baumann, Jessica H. Nickling, David Peterhoff, Ralf Wagner, Nediljko Budisa, Oscar P. Kuipers |
Abstract |
The incorporation of non-canonical amino acids (ncAAs) into ribosomally synthesized and post-translationally modified peptides, e.g., nisin from the Gram-positive bacterium Lactococcus lactis, bears great potential to expand the chemical space of various antimicrobials. The ncAA Nε-Boc-L-lysine (BocK) was chosen for incorporation into nisin using the archaeal pyrrolysyl-tRNA synthetase-tRNAPyl pair to establish orthogonal translation in L. lactis for read-through of in-frame amber stop codons. In parallel, recombinant nisin production and orthogonal translation were combined in Escherichia coli cells. Both organisms synthesized bioactive nisin(BocK) variants. Screening of a nisin amber codon library revealed suitable sites for ncAA incorporation and two variants displayed high antimicrobial activity. Orthogonal translation in E. coli and L. lactis presents a promising tool to create new-to-nature nisin derivatives. |
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Geographical breakdown
Country | Count | As % |
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Netherlands | 2 | 50% |
Ireland | 1 | 25% |
Unknown | 1 | 25% |
Demographic breakdown
Type | Count | As % |
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Scientists | 3 | 75% |
Members of the public | 1 | 25% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 47 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 11 | 23% |
Student > Bachelor | 7 | 15% |
Student > Ph. D. Student | 6 | 13% |
Student > Doctoral Student | 4 | 9% |
Other | 2 | 4% |
Other | 7 | 15% |
Unknown | 10 | 21% |
Readers by discipline | Count | As % |
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Biochemistry, Genetics and Molecular Biology | 19 | 40% |
Agricultural and Biological Sciences | 5 | 11% |
Immunology and Microbiology | 4 | 9% |
Chemistry | 3 | 6% |
Chemical Engineering | 1 | 2% |
Other | 3 | 6% |
Unknown | 12 | 26% |