Botulinum neurotoxins (BoNTs) are considered to be the deadliest
naturally occurring toxins known to man. The potential use
of BoNTs as bioweapons has accelerated the race to develop
vaccines and antitoxins for this
Category A
bioterrorism agent as defined by the National Institute of Allergy and Infectious Diseases
(NIAID).
Exposure to botulinum toxins results in several forms of
botulism including foodborne, wound and infant
botulism as well as intestinal colonization of adults resulting in neuroparalytic
botulism. BoNT/A, BoNT/B, BoNT/E and BoNT/F cause human botulism and are
chromosome associated. BoNT/C and BoNT/D cause animal botulism
and are lysogenic phage (prophage) associated.
Botulinum toxins have also proven beneficial as treatments for involuntary
muscle disorders and migraines and are widely used in
cosmetology and anti-aging medications.
Botulinum-relevant nucleotide and protein sequences can be retrieved from NCBI using taxonomy ID queries submitted against NCBI's Entrez nucleotide and protein databases. Results, where available, for these queries can be viewed by following the links provided below for the seven BoNT serotypes. In addition, links to NCBI's Taxonomy Browser are available for these serotypes to provide navigation to genomic trace records. For a curated list of Clostridium botulinum nucleotide and protein sequences available at NCBI by serotype, see the BoNT_toxins and BoNT_strains pages.
Serotype Name |
Number of Nucleotide Sequences |
Number of Protein Sequences |
Genomic Trace Records |
| BoNT/A | 3 | 2 | Taxonomy ID: 36826 |
| BoNT/B | 5 | 10 | Taxonomy ID: 36827 |
| BoNT/C | 2 | 1 | Taxonomy ID: 36828 |
| BoNT/D | 3 | 2 | Taxonomy ID: 36829 |
| BoNT/E | 1 | Taxonomy ID: 36830 | |
| BoNT/F | 1 | Taxonomy ID: 36831 | |
| BoNT/G | 2 | 1 | Taxonomy ID: 29341 |