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Why do the toxic insecticidal proteins secreted by Bacillus thuringiensis kill the insect and not the bacteria itself?

Asked by Topperlearning User 10th June 2014, 4:38 PM
Answered by Expert

The Bt toxin protein exists as inactive protoxin. Once an insect ingests the inactive toxin, it is converted into an active form of the toxin due to the alkaline pH of the gut which solubilises the crystals. Therefore, it does not kill the bacteria.

Answered by Expert 10th June 2014, 6:38 PM
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