This organism's O157:H7 strain is often the cause of food poisoning.
In experiments led by Richard Lenski, this organism evolved to metabolize citrate, while wild-type strains' inability to do so can be used to differentiate them from Salmonella. It is targeted by the T4 bacteriophage, and one early application of recombinant DNA enabled it to produce human insulin. This organism's O157:H7 strain is often the cause of food poisoning. For 10 points, name this Gram-negative intestinal bacterium commonly used as a model organism.
In experiments led by Richard Lenski, this organism evolved to metabolize citrate, while wild-type strains' inability to do so can be used to differentiate them from Salmonella.
Escherichia {coli} [accept {e.} coli]