Title :

Heterologous biosynthesis of five new class II bacteriocins from Lactobacillus paracasei CNCM I-5369 with antagonistic activity against pathogenic Escherichia coli strains

Author(s) :

Belguesmia, Yanath [Auteur correspondant]
Transfrontalière BioEcoAgro - UMR 1158 [BioEcoAgro]
Bendjeddou, Kamel [Auteur]
Université Abderrahmane Mira [Béjaïa]
Kempf, Isabelle [Auteur]
Boukherroub, Rabah [Auteur]
NanoBioInterfaces - IEMN [NBI - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Drider, Djamel [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Frontiers in Microbiology

Pages :

1198, 9 pages

Publisher :

Frontiers Media

Publication date :

2020-06

ISSN :

1664-302X

English keyword(s) :

Lactobacillus paracasei
Escherichia coli
Antimicrobial agents
multibacteriocinogenic strain
bacteriocins

HAL domain(s) :

Sciences du Vivant [q-bio]/Alimentation et Nutrition

English abstract : [en]

Lactobacillus paracasei CNCM I-5369 isolated from a traditional Algerian dairy product produces extracellular inhibitory substances, namely, bacteriocins, which are active against a panel of pathogenic Escherichia coli ...
Show more >Lactobacillus paracasei CNCM I-5369 isolated from a traditional Algerian dairy product produces extracellular inhibitory substances, namely, bacteriocins, which are active against a panel of pathogenic Escherichia coli strains. This activity was observed only at a narrow pH 4.5-5, and resulted to be heat stable and sensitive to the action of proteolytic enzymes, which indicate a proteinaceous nature. This new strain has a genome of 2,752,975 bp, with a 46.6% G + C ratio and contains at least 2664 coding sequences. The Bagel software analysis identified five open reading frames (ORFs) that are translated to new class II bacteriocin. Each ORF was cloned in frame with a His-tag tail and expressed in E. coli BL21 (DE3) (pLysS) strain. Of note, each fusion protein carrying any of these ORFs at the C- or N-terminal position resulted to be active against E. coli 184 strain used as target organism. This manuscript reports the first multi-bacteriocinogenic strain producing five new class II bacteriocins with activity against Gram-negative bacilli (GNB), namely, E. coli. Heterologous expression and activity of each new class II bacteriocin were demonstrated.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Alternatives stratégiques pour réduire l'usage de la colistine dans les pratiques d'élevage de porc

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL