What is the function of Cry1Ac?

Produced in Insect- Protected Soybean MON 87701 MON 87701 is an insect-protected soybean that produces the Cry1Ac insecticidal protein derived from Bacillus thuringiensis subsp. kurstaki. Cry1Ac provides protection from feeding damage by target lepidopteran pests.

What is Cry2Ab?

Author Summary. Transgenic crops expressing the insecticidal protein Cry2Ab from Bacillus thuringiensis (Bt) are used worldwide to suppress damage by lepidopteran pests, often used in combination with Cry1Ac toxin to delay resistance evolution.

Is crying a protein?

Pesticidal crystal proteins (Cry) are endotoxins produced by Bacillus thuringiensis, and form crystal structures (thus the name “cry” proteins, short for crystal). The insect stops eating and starves to death; live Bt bacteria may also colonize the insect which can contribute to death. See also Toxins.

How is Cry1Ac used in the human body?

Cry1Ac was able to bind the mouse intestinal surface in situ experiments. These result evidence an interaction of Cry1Ac protein with the mouse physiological system, that be demonstrated the Cry1Ac harmless properties with immunotoxicological test, could be used in edible vaccine derived from transgenic plants ( Vazquez et al., 1999a, b ).

Are there any soybeans that contain the cry1Ac gene?

Bt soybean containing a Cry1Ac gene is in the final stages of development for release into South America ( Miklos et al., 2007 ). Field trials have been conducted in Nigeria using a cowpea transformed with a cry1Ab gene.

How are Cry1Ac and Cry1F proteins used in cotton?

Using a strategy similar to Bollgard II, Dow Agrosciences developed “WideStrike” cotton to simultaneously express two separate insecticidal Bt proteins, Cry1Ac and Cry1F.

Is the Cry1Ac protein a strong immunogen?

Recently we have reported unusual inmmunological properties for Cry1Ac protein (Vázquez et al., 1998 ). This polypeptide is a strong immunogen when applied to mice by mucosal and systemic routes.