Table 1 Bacterial strains and plasmids used in this study
Strain or plasmid | Relevant characteristics | Source/reference |
|---|---|---|
Strains | ||
 NZ3900 | Host for food-grade use of the NICE system by plasmids election based on the ability to grow on lactose as carbon source. | MoBiTec |
 L. lactis | L. lactis NZ3900 containing pNZ8149 plasmid | MoBiTec |
 L. lactis-RCK | L. lactis NZ3900 containing pNZ8149-RCK plasmid | This study |
 L. lactis-VP2-RCK | L. lactis NZ3900 containing pNZ8149-VP2-RCK | This study |
Plasmid | ||
 pNZ8149 | High-copy number lactococcal vector | MoBiTec |
 pNZ8149-RCK | Vector carrying rck gene | This study |
 pNZ8149-VP2-RCK | Vector carrying VP2 gene and rck gene | This study |