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NICE® Expression System for Lactococcus lactis

ELV00300-01 - NICE® pNZ8149 Lactococcus lactis expression vector, NcoI site, food grade, 10 µg


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The Nisin controlled gene expression system (NICE®), developed at NIZO Food Research, NL, is a fully food-grade system used for controlled gene expression in Lactococcus Lactis. The NICE® system is advantageous in that it does not contain endotoxins, inclusion bodies, spores or extracellular proteases, and the tightly controlled gene expression allows the production of toxic proteins to take place. With this system, fermentation, scale-up and downstream processing are simple.

The NICE® pNZ8149 Lactococcus lactis expression vector (food grade), part of the NICE® expression system, is used for intracellular expression. This vector has the lacF gene as a food-grade selection marker. To enable selection of transformants, it needs a host strain with the lactose operon without the lacF gene such as Lactococcus lactis NZ3900. The nisA promoter is followed by an NcoI site for translational fusions at the ATG. It contains a terminator after the MCS. Sequence adaptation for cloning in NcoI can result in a change of the second amino acid of a protein

Please note this product requires a license for non-academic institutions. Please contact us for licensing information.


  • Endotoxin-free, food-grade expression system
  • Expression of membrane proteins
  • Secretion of proteins into the medium
  • Fewer endogenous and no exogenous proteases
  • No spores or inclusion bodies
  • Tightly controlled gene expression allows production of toxic proteins
  • Simple fermentation, scale-up and downstream processing


  • Production of homologous and heterologous proteins for food, feed, pharmacological and biocatalysis applications
  • Production of prokaryotic and eukaryotic membrane proteins
  • Production of exopolysaccharides
  • Production of ingredients through metabolic engineering: e.g. alanine, folate, diacetyl
  • Preparation of L. lactis as a biocatalyst by expression of a suitable enzyme as, e.g., dehydrogenases and in-situ cofactor regeneration
  • High-throughput screening for enzyme evolution or enzyme comparison


  • NICE® pNZ8149 Lactococcus lactis expression vector, food-grade (lacF), NcoI site, 10 µg



  • Frelet-Barrand, A., Boutigny, S., Kunji, E. R. S., und Rolland, N. (2010). "Membrane protein expression in Lactococcus lactis." Methods Mol. Biol 601, 67-85.

  • Villatoro-Hernandez, J. et al. (2012). "Heterologous protein expression by Lactococcus lactis." In A. Lorence (ed.), Recombinant Gene Expression: Reviews and Protocols, Third Edition, Methods in Molecular Biology, vol. 824. Chapter 8, p. 155 - 165.