Bacillus thuringiensis forms protein crystals | vedclass

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Question

(B) $Bacillus$ $thuringiensis$ $(Bt)$ produces insecticidal protein crystals during a particular phase of their growth. These crystals contain a toxic

Vedclass · Accepted Answer

Binds to the epithelial cells of the midgut of the insect and eventually causes its death.

Vedclass · Answer

(B) $Bacillus$ $thuringiensis$ $(Bt)$ produces insecticidal protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. This protein exists as an inactive protoxin in the bacterium. When an insect ingests the inactive toxin,it is converted into an active form due to the alkaline $pH$ of the gut,which solubilizes the crystals. The activated toxin binds to the surface of midgut epithelial cells and creates pores that cause cell swelling and lysis,eventually leading to the death of the insect.

Bacillus thuringiensis forms protein crystals which contain a toxic insecticidal protein. This protein:

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