Insecticidal protein, gene encoding the same and uses thereof
The invention relates to an insecticidal protein, its gene encoding and the uses thereof. The protein comprises: (a) a protein consisting of an amino acid sequence shown by SEQ ID NO:2; or (b) a protein derived from (a) consisting of an amino acid sequence by substitution, deletion, or addition of one or more amino acid residues of the amino acid sequences in (a), and having insecticidal activity; or (c) a protein generated by the expression of nucleic acid molecules containing a nucleotide sequence of SEQ ID NO:1; or (d) a protein generated by the expression of nucleic acid molecules containing a complementary sequence that hybridized with SEQ ID NO:1 under stringent conditions; or (e) a protein generated by the expression of nucleic acid molecules that contain nucleotide sequences isocoding with the nucleotide sequences in (d). The insecticidal protein of the invention has high expression level and strong toxicity against pests.
1. An insecticidal protein, comprising:
(a) a protein consisting of the amino acid sequence of SEQ ID NO:2; or
(b) a protein encoded by the nucleic acid sequence of SEQ ID NO:3; or
(c) a protein encoded by the nucleic acid sequence of SEQ ID NO:4; or
(d) a protein encoded by the nucleic acid sequence of SEQ ID NO:5.
2. A method for controlling insect pests, comprising contacting the insect pests with an inhibitory amount of the insecticidal protein of claim 1 , wherein the insect pests are Lepidoptera insect pests.
3. The method for controlling insect pests according to claim 2 , wherein the insecticidal protein is produced from a transgenic host organism, and wherein the transgenic host organism is selected from the group consisting of plant cells, animal cells, bacteria, yeast, baculovirus, nematodes and algae.
4. The method for controlling insect pests according to claim 3 , wherein the plant is maize, soybean, cotton, rice or wheat.
5. The method for controlling insect pests according to claim 4 , wherein the insecticidal protein is expressed in the plant together with at least one second insecticidal protein that is different from the insecticidal protein of SEQ ID NO:2 and the insecticidal proteins encoded by SEQ NOs: 3, 4, and 5.
6. The method for controlling insect pests according to claim 5 , wherein the second insecticidal protein is a Vip-type insecticidal protein, a protease inhibitor, an agglutinin, an α-amylase or a peroxidase.