MON863 maize is a product of the Monsanto company. The maize line was produced by particle acceleration (biolistic) transformation and contains the following two foreign genes:
- a cry3Bb1 gene from Bacillus thuringiensis ssp. kumamotoensis. The cry3Bb1 gene encodes a Coleopteran-specific insecticidal protein.
- a nptII gene. NptII is an antibiotic resistance marker gene encoding the enzyme neomycin phosphotransferase II