Use of a Pan-Genomic DNA Microarray in Determination of the Phylogenetic Relatedness among Cronobacter spp. and Its Use as a Data Mining Tool to Understand Cronobacter Biology.

(previously known as ) is a genus of Gram-negative, facultatively anaerobic, oxidase-negative, catalase-positive, rod-shaped bacteria of the family . These organisms cause a variety of illnesses such as meningitis, necrotizing enterocolitis, and septicemia in neonates and infants, and urinary tract, wound, abscesses or surgical site infections, septicemia, and pneumonia in adults. The total gene content of 379 strains of spp.

Analysis and Characterization of Proteins Associated with Outer Membrane Vesicles Secreted by spp.

Little is known about secretion of outer membrane vesicles (OMVs) by . In this study, OMVs isolated from , and were examined by electron microscopy (EM) and their associated outer membrane proteins (OMP) and genes were analyzed by SDS-PAGE, protein sequencing, BLAST, PCR, and DNA microarray. EM of stained cells revealed that the OMVs are secreted as pleomorphic micro-vesicles which cascade from the cell's surface.

Genome Sequences of Malonate-Positive Cronobacter sakazakii Serogroup O:2, Sequence Type 64 Strains CDC 1121-73 and GK1025, Isolated from Human Bronchial Wash and a Powdered Infant Formula Manufacturing Plant.

We introduce draft genome sequences of strains CDC1121-73 (human bronchial wash isolate) and GK1025 (powdered infant formula manufacturing facility isolate), which are both malonate-positive Cronobacter sakazakii serogroup O:2, sequence type 64. Assemblies for these strains have sizes of 4,442,307 and 4,599,266 bp and % G+C contents of 56.9 and 56.

Analysis of the cellulose synthase operon genes, bcsA, bcsB, and bcsC in Cronobacter species: Prevalence among species and their roles in biofilm formation and cell-cell aggregation.

Cronobacter species are emerging food-borne pathogens that cause severe sepsis, meningitis, and necrotizing entercolitis in neonates and infants. Bacterial pathogens such as Escherichia coli and Salmonella species produce extracellular cellulose which has been shown to be involved in rugosity, biofilm formation, and host colonization. In this study the distribution and prevalence of cellulose synthase operon genes (bcsABZC) were determined by polymerase chain reaction (PCR) analysis in 231 Cronobacter strains isolated from clinical, food, environmental, and unknown sources.