In the periplasm — the space between the inner and outer membranes of a bacteria's cell wall — defensive proteins that detect a poison assemble like barrel staves to form a tunnel between pumps in the cell's inner and outer membranes to eject the intruders. Artist's conception by Ace George Santiago, Cornell University.
In the periplasm — the space between the inner and outer membranes of a bacteria's cell wall — defensive proteins that detect a poison assemble like barrel staves to form a tunnel between pumps in the cell's inner and outer membranes to eject the intruders.

E. coli bacteria defense secret revealed

Findings could lead to ways to combat antibiotic-resistant bacteria with a "cocktail" of drugs.

By tagging a cell's proteins with fluorescent beacons, Cornell researchers have found out how Escherichia coli bacteria defend themselves against antibiotics and other poisons.

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