Detection, partial purification and characterization of bacteriocin produced by Lactobacillus brevis FPTLB3 isolated from freshwater fish

Banerjee, Shiba Prosad; Dora, K. C.; Chowdhury, S.

doi:10.1007/s13197-011-0240-4

Cited by 52 publications

(32 citation statements)

References 26 publications

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“…There have been other reports of possible, cell-associated bacteriocins (Banerjee et al, 2013; Barbour and Philip, 2014; Burmølle et al, 2006; Daba et al, 1994; Dang and Lovell, 2016; Tahara and Kanatani, 1997; Yang et al, 1992), but these prior cases are unlikely to represent contact-dependent killing systems. In most of these cases, significant killing activity was also found in cell-free supernatants and the bacteriocins were typically easily detected in supernatants, suggesting they are primarily secreted into the environment and not exclusively cell-associated as with CdzC and CdzD.…”

Section: Discussionmentioning

confidence: 99%

Contact-dependent killing by Caulobacter crescentus via cell surface-associated, glycine zipper proteins

García-Bayona

Guo

Laub

2017

eLife

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Most bacteria are in fierce competition with other species for limited nutrients. Some bacteria can kill nearby cells by secreting bacteriocins, a diverse group of proteinaceous antimicrobials. However, bacteriocins are typically freely diffusible, and so of little value to planktonic cells in aqueous environments. Here, we identify an atypical two-protein bacteriocin in the α-proteobacterium Caulobacter crescentus that is retained on the surface of producer cells where it mediates cell contact-dependent killing. The bacteriocin-like proteins CdzC and CdzD harbor glycine-zipper motifs, often found in amyloids, and CdzC forms large, insoluble aggregates on the surface of producer cells. These aggregates can drive contact-dependent killing of other organisms, or Caulobacter cells not producing the CdzI immunity protein. The Cdz system uses a type I secretion system and is unrelated to previously described contact-dependent inhibition systems. However, Cdz-like systems are found in many bacteria, suggesting that this form of contact-dependent inhibition is common.DOI: http://dx.doi.org/10.7554/eLife.24869.001

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Section: Discussionmentioning

confidence: 99%

Contact-dependent killing by Caulobacter crescentus via cell surface-associated, glycine zipper proteins

García-Bayona

Guo

Laub

2017

eLife

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“…Because the technique is semi-quantitative analysis, the population density of saba-narezushi should be determined by quantitative technique such as real-time PCR. Lactobacillus brevis FPTLB3 isolated from freshwater fish produced bacteriocin that inhibited Escherichia coli, Enterococcus faecalis, L. sakei and Staphylococcus aureus (Banerjee et al 2011). The isolate can potentially be used for biopreservation of the food.…”

Section: Resultsmentioning

confidence: 99%

Analysis of bacterial community structure in Saba-Narezushi (Narezushi of Mackerel) by 16S rRNA gene clone library

et al. 2011

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Narezushi, a derivation of sushi, is a traditional Japanese food made by fermenting salted fish meat and cooked rice together. In this study, the microbial diversity of saba-narezushi (narezushi of mackerel, Scomber japonicus) was analyzed by the 16S ribosomal RNA gene clone library method. Chemical composition was also analyzed to compare with different kinds of narezushi. The chemical composition of the narezushi was similar to those obtained from samma-narezushi. Ninety-four clones were randomly selected and DNA sequences of cloned fragments (approx. 890 bp) were analyzed. The DNA sequences obtained were phylogenetically analyzed. The expected operational taxonomy units (OTUs) by Chao1 estimates and ShannonWiener index (H′) at 97% identity threshold were 48 and 1.822, respectively. The sequence similarity of the cloned fragment was equal to or higher than 98% of the sequence of cultivated bacterial species in the public database. Most of the clones (85%) belonged to lactic acid bacteria (LAB). Lactobacillus curvatus was the most abundant species followed by Lactococcus piscium and Leuconostoc gasicomitatum, suggesting that these bacteria play important roles in the fermentation of saba-narezushi.

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“…The Spotnape pony fish and Sturgeon fish are the potent fish species containing microbiota, which are able to produce BLIS and can prevent the bacterial disease such as Vibrio septicaemia, haemorrhagic septicaemia & bacterial gill diseases (Table ) in aquaculture. There are many researchers reported that the bacteriocins producing bacteria isolated from the freshwater fish possess antagonistic activity against common most fish pathogen A. hydrophila (Vijayabaskar & Somasundaram ; Giri, Sukumaran, Sen, Vinumonia, Banu & Jena ; Banerjee, Dora & Chowdhury ), but the mechanism behind the same is still unknown. Further extensive study is required to obtain more scientific understanding and knowledge to prevent diseases in aquaculture, which ultimately avoiding the loss and spoilage during production of aquaculture product.…”

Section: Bacteriocins Isolated From Fish Microbiotamentioning

confidence: 99%

Bacteriocins and their applications for the treatment of bacterial diseases in aquaculture: a review

et al. 2014

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Aquaculture is one of the fastest growing food producing sectors in the world. The increase in the world population requires faster growth in aquaculture for better food availability and to overcome malnutrition. But this worldwide growth of aquaculture is overwhelmed by catastrophic fish diseases and spoilage during cultivation and preservation problems caused by pathogenic bacteria. Various remedies are available for food preservation and also from the bacterial diseases in the fish production. Due to the emergence of antibiotic resistance and adverse effects, an alternative to antibiotic is the need of the hour. The proteins such as bacteriocins, i.e. ribosomally synthesized antimicrobial peptides (AMPs) and possess antagonistic against closely related and other bacteria. These proteins are produced by most lineages of bacteria which are playing key roles in recognition and possess a cognate immunity system for self-protection as well as host protection from infections. These proteins are potent immunomodulators with broad spectrum inhibition properties which are further used as novel therapeutic agents. In this review, we have tried to summarize the bacteriocins on the basis of their classifications, structural and functional attributes, mode of actions, bacteriocins isolated from fish and gut microbiota and presence of beneficiary bacteria in the fish gut. Further, this study highlighted where further research is a prerequisite to increase our basic understanding and search for novel bacteriocins to elucidate the proteins/peptides having antimicrobial properties for disease control in aquaculture as an alternative to antibiotics.

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Detection, partial purification and characterization of bacteriocin produced by Lactobacillus brevis FPTLB3 isolated from freshwater fish

Cited by 52 publications

References 26 publications

Contact-dependent killing by Caulobacter crescentus via cell surface-associated, glycine zipper proteins

Contact-dependent killing by Caulobacter crescentus via cell surface-associated, glycine zipper proteins

Analysis of bacterial community structure in Saba-Narezushi (Narezushi of Mackerel) by 16S rRNA gene clone library

Bacteriocins and their applications for the treatment of bacterial diseases in aquaculture: a review

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