Bacillus cereus
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Bacillus cereus is a Gram-positive rod-shaped bacterium commonly found in soil, food, and marine sponges. The specific name, cereus, meaning "waxy" in Latin, refers to the appearance of colonies grown
Electron micrograph of Bacillus cereus
Bacillus cereus endospore stain
Bacillus cereus colonies on the indicator media Brilliance Bacillus cereus agar
Cereulide
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Cereulide is a heat-stable toxin produced by some strains of Bacillus cereus, B. megaterium and related species. It is a potent cytotoxin that causes nausea and vomiting.
Bacillus cereus
…like other members of the genus Bacillus, can produce protective endospores. They have a wide range of virulence factors, including phospholipase C, cereulide, sphingomyelinase, metalloproteases, and cytotoxin K, many of which are regulated via quorum sensing. B. cereus strains exhibit flagellar motility. The…
The following depicts the non-ribosomal peptide synthetase of the cereulide tetrapeptide. The growing and modified peptide can be seen on each Thiolation (T) domain. The new part of the molecule being inserted between the sulphur atom and the first carbonyl groep.