Dataset Information

Draft Genome Sequences of Enterotoxigenic Bacillus cereus Strains Obtained from Powdered Infant Formula.

ABSTRACT: We introduce the draft genome sequences of five enterotoxigenic Bacillus cereus strains: Bc 12, Bc 67, Bc 111, Bc 112, and Bc 113, which were obtained from powdered infant formula. The genome sizes of the strains ranged from 5.5 to 5.8 Mb, and the G+C contents were ~35.2%.

SUBMITTER: Carter L

PROVIDER: S-EPMC5323619 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Draft Genome Sequences of Enterotoxigenic <i>Bacillus cereus</i> Strains Obtained from Powdered Infant Formula.

Carter Laurenda L Chase Hannah R HR Choi Hyerim H Jun SoYoung S Park JiHyeon J Jeong Seungeun S Kim MiJeong M Han KyuYoung K Lee ChaeYoon C Jeong HyeJin H Finkelstein Samantha S Negrete Flavia F Cinar Hediye N HN Tall Ben D BD Gopinath Gopal R GR

Genome announcements 20170223 8

We introduce the draft genome sequences of five enterotoxigenic <i>Bacillus cereus</i> strains: Bc 12, Bc 67, Bc 111, Bc 112, and Bc 113, which were obtained from powdered infant formula. The genome sizes of the strains ranged from 5.5 to 5.8 Mb, and the G+C contents were ~35.2%. ...[more]

PMID: 28232440

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Project description:BackgroundCronobacter sakazakii is a foodborne pathogen that causes septicemia, meningitis, and necrotizing enterocolitis in neonates and infants. The current research details the full genome sequences of two extremely persistent C. sakazakii strains (H322 and GK1025B) isolated from powdered infant formula (PIF) manufacturing settings. In addition, the genetic attributes associated with five plasmids, pH322_1, pH322_2, pGK1025B_1, pGK1025B_2, and pGK1025B_3 are described.Materials and methodsUsing PacBio single-molecule real-time (SMRT®) sequencing technology, whole genome sequence (WGS) assemblies of C. sakazakii H322 [Sequence type (ST)83, clonal complex [CC] 83) and GK1025B (ST64, CC64) were generated. Plasmids, also sequenced, were aligned with phylogenetically related episomes to determine, and identify conserved and missing genomic regions.ResultsA truncated ~ 13 Kbp type 6 secretion system (T6SS) gene cluster harbored on virulence plasmids pH322_2 and pGK1025B_2, and a second large deletion (~ 6 Kbp) on pH322_2, which included genes for a tyrosine-type recombinase/integrase, a hypothetical protein, and a phospholipase D was identified. Within the T6SS of pH322_2 and pGK1025B_2, an arsenic resistance operon was identified which is in common with that of plasmids pSP291_1 and pESA3. In addition, PHASTER analysis identified an intact 96.9 Kbp Salmonella SSU5 prophage gene cluster in pH322_1 and pGK1025B_1 and showed that these two plasmids were phylogenetically related to C. sakazakii plasmids: pCS1, pCsa767a, pCsaC757b, pCsaC105731a. Plasmid pGK1025B_3 was identified as a novel conjugative Cronobacter plasmid. Furthermore, WGS analysis identified a ~ 16.4 Kbp type 4 secretion system gene cluster harbored on pGK1025B_3, which contained a phospholipase D gene, a key virulence factor in several host-pathogen diseases.ConclusionThese data provide high resolution information on C. sakazakii genomes and emphasizes the need for furthering surveillance studies to link genotype to phenotype of strains from previous investigations. These results provide baseline data necessary for future in-depth investigations of C. sakazakii that colonize PIF manufacturing facility settings and genomic analyses of these two C. sakazakii strains and five associated plasmids will contribute to a better understanding of this pathogen's survival and persistence within various "built environments" like PIF manufacturing facilities.

Dataset Information

Draft Genome Sequences of Enterotoxigenic Bacillus cereus Strains Obtained from Powdered Infant Formula.

Publications

Draft Genome Sequences of Enterotoxigenic <i>Bacillus cereus</i> Strains Obtained from Powdered Infant Formula.

Similar Datasets

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