The genome of the maize line MON89034 contains, among other sequences, the cry1A.105 and the cry2Ab2 genes, deriving from Bacillus thuringiensis.
The maize event MON89034 expresses two proteins, the Cry1A.105 and Cry2Ab2, which are toxic to Lepidoptera and allow the plant to resist Lepidoptera insect pest attacks.