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The enhancin-like metalloprotease from the Bacillus cereus group is regulated by the pleiotropic transcriptional activator PlcR but is not essential for larvicidal activity.
FEMS Microbiol Lett. 2006 Jul; 260(1):9-16.FM

Abstract

Bacillus cereus group bacteria produce virulence factors. Many of these are regulated by the pleiotropic transcriptional activator PlcR, which is implicated in insect virulence. In silico analysis of the B. cereus strain ATCC14579 genome showed an enhancin-like gene preceded by a typical PlcR binding sequence. The gene is predicted to encode a polypeptide showing 23-25% identity with enhancins from several baculoviruses and 31% with that of Yersinia pestis. Viral enhancin acts after oral infection and degrades the peritrophic matrix of various Lepidopteran larvae. To rule out a possible implication of Bacillus enhancin in insect virulence, we sequenced the enhancin gene from the Bacillus thuringiensis 407-crystal minus strain and investigated its gene regulation and larvicidal activity. A typical metalloprotease zinc-binding domain (HEIAH) was detected and the gene was named mpbE (metalloprotease bacillus enhancin). An mpbE'-lacZ transcriptional fusion demonstrated that mpbE belongs to the PlcR regulon. The mpbE mutant was fed to Galleria mellonella larvae, and no significant reduction in virulence was observed. However, this may not exclude MpbE from a role in pathogenesis.

Authors+Show Affiliations

Unité Génétique Microbienne et Environnement, I.N.R.A., La Minière, Guyancourt, France.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16790012

Citation

Hajaij-Ellouze, Myriam, et al. "The Enhancin-like Metalloprotease From the Bacillus Cereus Group Is Regulated By the Pleiotropic Transcriptional Activator PlcR but Is Not Essential for Larvicidal Activity." FEMS Microbiology Letters, vol. 260, no. 1, 2006, pp. 9-16.
Hajaij-Ellouze M, Fedhila S, Lereclus D, et al. The enhancin-like metalloprotease from the Bacillus cereus group is regulated by the pleiotropic transcriptional activator PlcR but is not essential for larvicidal activity. FEMS Microbiol Lett. 2006;260(1):9-16.
Hajaij-Ellouze, M., Fedhila, S., Lereclus, D., & Nielsen-LeRoux, C. (2006). The enhancin-like metalloprotease from the Bacillus cereus group is regulated by the pleiotropic transcriptional activator PlcR but is not essential for larvicidal activity. FEMS Microbiology Letters, 260(1), 9-16.
Hajaij-Ellouze M, et al. The Enhancin-like Metalloprotease From the Bacillus Cereus Group Is Regulated By the Pleiotropic Transcriptional Activator PlcR but Is Not Essential for Larvicidal Activity. FEMS Microbiol Lett. 2006;260(1):9-16. PubMed PMID: 16790012.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The enhancin-like metalloprotease from the Bacillus cereus group is regulated by the pleiotropic transcriptional activator PlcR but is not essential for larvicidal activity. AU - Hajaij-Ellouze,Myriam, AU - Fedhila,Sinda, AU - Lereclus,Didier, AU - Nielsen-LeRoux,Christina, PY - 2006/6/23/pubmed PY - 2006/8/10/medline PY - 2006/6/23/entrez SP - 9 EP - 16 JF - FEMS microbiology letters JO - FEMS Microbiol. Lett. VL - 260 IS - 1 N2 - Bacillus cereus group bacteria produce virulence factors. Many of these are regulated by the pleiotropic transcriptional activator PlcR, which is implicated in insect virulence. In silico analysis of the B. cereus strain ATCC14579 genome showed an enhancin-like gene preceded by a typical PlcR binding sequence. The gene is predicted to encode a polypeptide showing 23-25% identity with enhancins from several baculoviruses and 31% with that of Yersinia pestis. Viral enhancin acts after oral infection and degrades the peritrophic matrix of various Lepidopteran larvae. To rule out a possible implication of Bacillus enhancin in insect virulence, we sequenced the enhancin gene from the Bacillus thuringiensis 407-crystal minus strain and investigated its gene regulation and larvicidal activity. A typical metalloprotease zinc-binding domain (HEIAH) was detected and the gene was named mpbE (metalloprotease bacillus enhancin). An mpbE'-lacZ transcriptional fusion demonstrated that mpbE belongs to the PlcR regulon. The mpbE mutant was fed to Galleria mellonella larvae, and no significant reduction in virulence was observed. However, this may not exclude MpbE from a role in pathogenesis. SN - 0378-1097 UR - https://www.unboundmedicine.com/medline/citation/16790012/The_enhancin_like_metalloprotease_from_the_Bacillus_cereus_group_is_regulated_by_the_pleiotropic_transcriptional_activator_PlcR_but_is_not_essential_for_larvicidal_activity_ L2 - https://academic.oup.com/femsle/article-lookup/doi/10.1111/j.1574-6968.2006.00289.x DB - PRIME DP - Unbound Medicine ER -