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Title: Genetic diversity within the botulinum neurotoxin-producing bacteria and their neurotoxins

Journal Article · · Toxicon
 [1]; ORCiD logo [1]; ORCiD logo [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. US Army Medical Research Inst. of Infectious Diseases (USAMRIID), Fort Detrick, MD (United States). Molecular and Translational Sciences Division

The recent availability of multiple Clostridium botulinum genomic sequences has initiated a new genomics era that strengthens our understanding of the bacterial species that produce botulinum neurotoxins (BoNTs). Analysis of the genomes has reinforced the historical Group I–VI designations and provided evidence that the bont genes can be located within the chromosome, phage or plasmids. The sequences provide the opportunity to examine closely the variation among the toxin genes, the composition and organization of the toxin complex, the regions flanking the toxin complex and the location of the toxin within different bacterial strains. These comparisons provide evidence of horizontal gene transfer and site-specific insertion and recombination events that have contributed to the variation observed among the neurotoxins. In this work, examples that have contributed to the variation observed in serotypes A-H strains are presented to illustrate the mechanisms that have contributed to their variation.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Institutes of Health (NIH)
Grant/Contract Number:
AC52-06NA25396; U01 AI056493
OSTI ID:
1457238
Report Number(s):
LA-UR-15-23061
Journal Information:
Toxicon, Vol. 107, Issue PA; ISSN 0041-0101
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

References (23)

Three Classes of Plasmid (47–63 kb) Carry the Type B Neurotoxin Gene Cluster of Group II Clostridium botulinum journal July 2014
Complete Genome Sequence of the Proteolytic Clostridium botulinum Type A5 (B3′) Strain H04402 065 journal May 2011
The Type F6 Neurotoxin Gene Cluster Locus of Group II Clostridium botulinum Has Evolved by Successive Disruption of Two Different Ancestral Precursors journal May 2013
Quantitative Real-Time Reverse Transcription-PCR Analysis Reveals Stable and Prolonged Neurotoxin Cluster Gene Activity in a Clostridium botulinum Type E Strain at Refrigeration Temperature journal October 2008
Regulation of toxin synthesis in Clostridium botulinum and Clostridium tetani journal December 2013
Arrangement of the Clostridium baratii F7 Toxin Gene Cluster with Identification of a σ Factor That Recognizes the Botulinum Toxin Gene Cluster Promoters journal May 2014
Clostridium botulinum Strain Af84 Contains Three Neurotoxin Gene Clusters: Bont/A2, bont/F4 and bont/F5 journal April 2013
Molecular Characterization of a Novel Botulinum Neurotoxin Type H Gene journal October 2013
Organization and Phylogenetic Interrelationships of Genes Encoding Components of the Botulinum Toxin Complex in Proteolytic Clostridium botulinum Types A, B, and F: Evidence of Chimeric Sequences in the Gene Encoding the Nontoxic Nonhemagglutinin Component journal October 1996
Evidence that Plasmid-Borne Botulinum Neurotoxin Type B Genes Are Widespread among Clostridium botulinum Serotype B Strains journal March 2009
Draft Genome Sequence of Bivalent Clostridium botulinum Strain IBCA10-7060, Encoding Botulinum Neurotoxin B and a New FA Mosaic Type journal November 2014
Organization of the botulinum neurotoxin C1 gene and its associated non-toxic protein genes in Clostridium botulinum C468 journal November 1994
Genetic Diversity among Botulinum Neurotoxin-Producing Clostridial Strains journal November 2006
Recombination and insertion events involving the botulinum neurotoxin complex genes in Clostridium botulinum types A, B, E and F and Clostridium butyricumtype E strains journal October 2009
Functional Characterization of Botulinum Neurotoxin Serotype H as a Hybrid of Known Serotypes F and A (BoNT F/A) journal March 2015
Isolation and Functional Characterization of the Novel Clostridium botulinum Neurotoxin A8 Subtype journal February 2015
Analysis of a unique Clostridium botulinum strain from the Southern hemisphere producing a novel type E botulinum neurotoxin subtype journal January 2012
The genome sequence of Clostridium botulinum type C neurotoxin-converting phage and the molecular mechanisms of unstable lysogeny journal November 2005
Genomic sequences of six botulinum neurotoxin-producing strains representing three clostridial species illustrate the mobility and diversity of botulinum neurotoxin genes journal March 2015
Molecular Characterization of Clostridium botulinum Isolates from Foodborne Outbreaks in Thailand, 2010 journal January 2014
Protection with recombinant Clostridium botulinum C1 and D binding domain subunit (Hc) vaccines against C and D neurotoxins journal May 2007
Two Novel Toxin Variants Revealed by Whole-Genome Sequencing of 175 Clostridium botulinum Type E Strains journal August 2014
Plasmid-Borne Type E Neurotoxin Gene Clusters in Clostridium botulinum Strains journal April 2013

Cited By (24)

A Rapid, Sensitive, and Portable Biosensor Assay for the Detection of Botulinum Neurotoxin Serotype A in Complex Food Matrices journal November 2018
Engineered botulinum neurotoxin B with improved efficacy for targeting human receptors journal July 2017
PCR-based molecular diagnosis of botulism (types C and D) outbreaks in aquatic birds journal October 2018
Identification of a novel botulinum neurotoxin gene cluster in Enterococcus journal January 2018
Structural basis for the unique ganglioside and cell membrane recognition mechanism of botulinum neurotoxin DC journal November 2017
Critical Analysis of Neuronal Cell and the Mouse Bioassay for Detection of Botulinum Neurotoxins journal December 2019
Engineering of Botulinum Neurotoxins for Biomedical Applications journal June 2018
The Light Chain Defines the Duration of Action of Botulinum Toxin Serotype A Subtypes journal March 2018
Why Are Botulinum Neurotoxin-Producing Bacteria So Diverse and Botulinum Neurotoxins So Toxic? journal January 2019
The Novel Clostridial Neurotoxin Produced by Strain IBCA10-7060 Is Immunologically Equivalent to BoNT/HA journal December 2019
Identification and characterization of a novel botulinum neurotoxin journal August 2017
Historical Perspectives and Guidelines for Botulinum Neurotoxin Subtype Nomenclature journal January 2017
Microbiota Signaling Pathways that Influence Neurologic Disease journal January 2018
The orphan germinant receptor protein GerXAO (but not GerX3b) is essential for L-alanine induced germination in Clostridium botulinum Group II journal May 2018
In silico mutagenesis: decreasing the immunogenicity of botulinum toxin type A journal January 2019
Diversity of Group I and II Clostridium botulinum Strains from France Including Recently Identified Subtypes journal April 2016
In silico mutagenesis: decreasing the immunogenicity of botulinum toxin type A text January 2019
A Rapid, Sensitive, and Portable Biosensor Assay for the Detection of Botulinum Neurotoxin Serotype A in Complex Food Matrices posted_content August 2018
In silico mutagenesis: decreasing the immunogenicity of botulinum toxin type A text January 2019
The pattern of growth observed forClostridium botulinumtype A1 strain ATCC 19397 is influenced by nutritional status and quorum sensing: a modelling perspective journal October 2015
Characterization of a membrane binding loop leads to engineering botulinum neurotoxin B with improved therapeutic efficacy journal March 2020
Diversity of the Germination Apparatus in Clostridium botulinum Groups I, II, III, and IV journal October 2016
Probiotic Microorganisms Inhibit Epithelial Cell Internalization of Botulinum Neurotoxin Serotype A journal December 2016
Vaccines against Botulism journal September 2017