sentence: Bacillus thuringiensis subsp. kurstaki strain PB 54 contains genes encoding for potential production of cytotoxin type K ( CytK ) , six crystal insecticidal proteins ( Cry1Ab , Cry1Aa , Cry1Ac , Cry1Ia , Cry2Aa and Cry2Ab ) , two Cry ‐ like proteins and one vegetative insecticidal protein ( VIP 3Aa ) .