AXMI-115, AXMI-113, AXMI-005, AXMI-163 and AXMI-184: insecticidal proteins and methods for their use
View Patent ↗Compositions and methods for conferring insecticidal activity to host cells are provided. Compositions comprising a coding sequence for a delta-endotoxin polypeptide are provided. The coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in host cells. Compositions also comprise transformed host cells. In particular, isolated delta-endotoxin nucleic acid molecules are provided. Additionally, amino acid sequences corresponding to the polynucleotides are encompassed, and antibodies specifically binding to those amino acid sequences. In particular, the present invention provides for isolated nucleic acid molecules comprising nucleotide sequences encoding the amino acid sequence shown in SEQ ID NO:4, 5, 6, 13, or 14, or the nucleotide sequence set forth in SEQ ID NO:1, 2, 3, 11, or 12, as well as variants and fragments thereof.
1. An isolated or recombinant nucleic acid molecule comprising a nucleotide sequence selected from the group consisting of:
a) the nucleotide sequence of SEQ ID NO:3;
b) a nucleotide sequence that encodes a polypeptide comprising the amino acid sequence of SEQ ID NO:6; and
c) a nucleotide sequence encoding an insecticidal polypeptide that is a variant of SEQ ID NO:6, wherein said variant is the result of one or more domain(s) of SEQ ID NO:4, 5, 13, or 14 being exchanged with the corresponding domain(s) of SEQ ID NO:6, wherein said nucleotide sequence encodes an insecticidal polypeptide.
2. The nucleic acid molecule of claim 1 , wherein said nucleotide sequence is selected from the group consisting of SEQ ID NO:15 and 16.
3. An expression cassette comprising the nucleic acid molecule of claim 1 .
4. The expression cassette of claim 3 , further comprising a nucleic acid molecule encoding a heterologous polypeptide.
5. A host cell that contains the recombinant nucleic acid molecule of claim 1 .
6. An isolated polypeptide with insecticidal activity, selected from the group consisting of:
a) a polypeptide comprising the amino acid sequence of SEQ ID NO:6;
b) a polypeptide that is encoded by the nucleotide sequence of any of SEQ ID NO:1, 2, 3, 11, or 12; and
c) a polypeptide that is a variant of SEQ ID NO:6, wherein said variant is the result of one or more domain(s) of SEQ ID NO:4, 5, 13, or 14 being exchanged with the corresponding domain(s) of SEQ ID NO:6, wherein said polypeptide has insecticidal activity.
7. The polypeptide of claim 6 further comprising heterologous amino acid sequences.
8. A composition comprising the isolated or recombinant nucleic acid molecule according to claim 1 .
9. The composition of claim 8 , wherein said composition is selected from the group consisting of a powder, dust, pellet, granule, spray, emulsion, colloid, and solution.
10. The composition of claim 8 , wherein said composition is prepared by desiccation, lyophilization, homogenization, extraction, filtration, centrifugation, sedimentation, or concentration of a culture of Bacillus thuringiensis cells.
11. A plant having stably incorporated into its genome a DNA construct comprising a nucleotide sequence that encodes a protein having insecticidal activity, wherein said nucleotide sequence is selected from the group consisting of:
a) a nucleotide sequence of SEQ ID NO:3; and
b) a nucleotide sequence that encodes a polypeptide comprising the amino acid sequence of SEQ ID NO:6; and
wherein said nucleotide sequence is operably linked to a promoter that drives expression of a coding sequence in a plant cell.
12. The plant of claim 11 , wherein said plant is a plant cell.
13. A transgenic seed of the plant of claim 11 .
14. The plant of claim 11 , wherein said plant is selected from the group consisting of maize, sorghum, wheat, cabbage, sunflower, tomato, crucifers, peppers, potato, cotton, rice, soybean, sugarbeet, sugarcane, tobacco, barley, and oilseed rape.
15. A method for protecting a plant from an insect pest, comprising introducing into said plant or cell thereof at least one expression vector comprising the nucleic acid molecule of claim 1 .
16. The nucleic acid molecule of claim 1 , wherein said nucleotide sequence is operably linked to a promoter capable of directing expression of said nucleotide sequence in a plant cell.