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자료유형
학술저널
저자정보
Roh, Jong-Yul (School of Agricultural Biotechnology, Seoul National University) Li, Ming-Shun (School of Agricultural Biotechnology, Seoul National University) Chang, Jin-Hee (School of Agricultural Biotechnology, Seoul National University) Shin, Sang-Chul (Division of Forest Insect Pests and Diseases, Korea Forest Research Institute) Boo, Kyung-Saeng (School of Agricultural Biotechnology, Seoul National University) Je, Yeon-Ho (School of Agricultural Biotechnology, Seoul National University)
저널정보
한국응용곤충학회 Journal of Asia-Pacific Entomology Journal of asia-pacific entomology 제7권 제1호
발행연도
2004.1
수록면
119 - 125 (7page)

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The expression of a fusion protein comprised of two Bacillus thuringiensis crystal proteins, lepidopteran toxic CrylAc and dipteran toxic Cry11A, in B. thuringiensis Cry-B strain was examined. To construct a recombinant gene, the cry11Α gene was inserted behind the ΧhoI site in the middle region of the crylΑc gene, but the C-terminal fragment (structure fragment) of CrylAc was removed in fusion construction (pProAcN-11A). Also, the cry 11A gene was singly cloned under the crylΑc promoter (pPro11A). The Β. thuringiensis Cry-B strain with pProAcN-11A (ProAcN-11A/CB) produced ovoid shaped parasporal inclusions of relatively small size, while Pro11A/CB produced rhomboid shaped ones. Unexpectedly, ProAcN-11A/CB produced a protein of approximately 60 kDa while Pro11A/CB and ProAc/CB produced typical 72 kDa and 130 kDa proteins, respectively. However, ProAcN-11A/CB exhibited significant dual toxicity on larvae from two insect orders, 72.7% on Plutella xylostella and 65.5% on Culex pipiens. The current results suggest that expression and crystallization of a fusion protein between toxic fragment of CrylAc and Cry11A was incomplete in the Cry-B strain though ProAcN-11A/CB produced parasporal inclusions and had dual toxicity.

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