Heterologous Expression and Purification of Active Divercin V41, a Class IIa Bacteriocin Encoded by a Synthetic Gene in Escherichia coli

AUTOR(ES)

Richard, Christelle

FONTE

American Society for Microbiology

RESUMO

Divercin V41, a class IIa bacteriocin with strong antilisterial activity, is produced by Carnobacterium divergens V41. To express a recombinant version of divercin V41, we constructed a synthetic gene that encodes the mature divercin V41 peptide and then overexpressed the gene in pET-32b by using the T7 RNA polymerase promoter in the Escherichia coli Origami (DE3)(pLysS) strain. The DvnRV41 peptide was expressed as a translational fusion protein with thioredoxin and accumulated in the cell cytoplasm in a soluble anti-Listeria active form. The fusion protein was then purified and cleaved to obtain pure, soluble, folded DvnRV41 (462 μg per 20 ml of culture). This paper describes the first design of a synthetic bacteriocin gene and the first bacteriocin expressed in the E. coli cytoplasm.

Documentos Relacionados

• Generation and Utilization of Polyclonal Antibodies to a Synthetic C-Terminal Amino Acid Fragment of Divercin V41, a Class IIa Bacteriocin
• Delineation of Key Amino Acid Side Chains and Peptide Domains for Antimicrobial Properties of Divercin V41, a Pediocin-Like Bacteriocin Secreted by Carnobacterium divergens V41
• Functional expression of heterologous fimbrial subunits mediated by the F41, K88, and CS31A determinants of Escherichia coli.
• Purification and Characterization of a Novel Class IIa Bacteriocin, Piscicocin CS526, from Surimi-Associated Carnobacterium piscicola CS526
• Active acetyl-CoA synthase from Clostridium thermoaceticum obtained by cloning and heterologous expression of acsAB in Escherichia coli