Genomic sequences of six botulinum neurotoxin-producing strains representing three clostridial species illustrate the mobility and diversity of botulinum neurotoxin genes

•Genomic sequences for six BoNT-producing clostridial strains were generated.•They include BoNT/G-producing Group IV C. botulinum and BoNT/F-producing C. baratii.•Genomes of diverse, under-represented, and unusual toxin types are included.•These genomes are compared with current published genomes and neurotoxin sequences.