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Immobilization of nisin producer Lactococcus lactis strains to chitin with surface-displayed chitin-binding domain

In this study, nisin producer Lactococcus lactis strains displaying cell surface chitin-binding domain (ChBD) and capable of immobilizing to chitin flakes were constructed. To obtain ChBD-based cell immobilization, Usp45 signal sequence with ChBD of chitinase A1 enzyme from Bacillus circulans was fused with different lengths of PrtP (153, 344, and 800 aa) or AcmA (242 aa) anchors derived from L. lactis. According to the whole cell ELISA analysis, ChBD was successfully expressed on the surface of L. lactis cells. Scanning electron microscope observations supported the conclusion of the binding analysis that L. lactis cells expressing the ChBD with long PrtP anchor (800 aa) did bind to chitin surfaces more efficiently than cells with the other ChBD anchors. The attained binding affinity of nisin producers for chitin flakes retained them in the fermentation during medium changes and enabled storage for sequential productions. Initial nisin production was stably maintained with many cycles. These results demonstrate that an efficient immobilization of L. lactis cells to chitin is possible for industrial scale repeated cycle or continuous nisin fermentation.
- Pamukkale University Turkey
- Yıldız Technical University Turkey
- Yıldız Technical University Turkey
- Pamukkale University Turkey
- Ondokuz Mayıs University Turkey
Sequential production, Chitin, Antibiotics, binding affinity, Radioactive waste vitrification, Scanning, Chitin-binding domains, fermentation, Nisin, Microscopy, article, protein domain, Chitin/*metabolism; Enzyme-Linked Immunosorbent Assay; Lactococcus lactis/*metabolism; Microscopy, Electron, Scanning; Nisin/*biosynthesis/metabolism; Protein Binding, bacterium, Scanning Electron Microscope, peptide, Lactococcus lactis, industrial production, cell surface, Scanning electron microscopy, Bacillus circulans, scanning electron microscopy, biotechnology, Protein Binding, 570, Binding affinities, 610, biological production, Enzyme-Linked Immunosorbent Assay, Binding energy, chitin, Electron, microbial activity, Immobilization, Enzyme immobilization, chemical binding, nonhuman, Nisin production, Bacteriology, bacterial strain, enzyme linked immunosorbent assay, Cell membranes, Chitin-binding domain, Anchors, Fermentation, immobilization, Cell immobilization, cytology, Microscopy, Electron, Scanning, nisin, Cytology
Sequential production, Chitin, Antibiotics, binding affinity, Radioactive waste vitrification, Scanning, Chitin-binding domains, fermentation, Nisin, Microscopy, article, protein domain, Chitin/*metabolism; Enzyme-Linked Immunosorbent Assay; Lactococcus lactis/*metabolism; Microscopy, Electron, Scanning; Nisin/*biosynthesis/metabolism; Protein Binding, bacterium, Scanning Electron Microscope, peptide, Lactococcus lactis, industrial production, cell surface, Scanning electron microscopy, Bacillus circulans, scanning electron microscopy, biotechnology, Protein Binding, 570, Binding affinities, 610, biological production, Enzyme-Linked Immunosorbent Assay, Binding energy, chitin, Electron, microbial activity, Immobilization, Enzyme immobilization, chemical binding, nonhuman, Nisin production, Bacteriology, bacterial strain, enzyme linked immunosorbent assay, Cell membranes, Chitin-binding domain, Anchors, Fermentation, immobilization, Cell immobilization, cytology, Microscopy, Electron, Scanning, nisin, Cytology
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).9 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10% visibility views 7 - 7views
Data source Views Downloads ZENODO 2 0 Ondokuz Mayıs University Institutional Repository 5 0

