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ID 46981
JaLCDOI
Sort Key
8
フルテキストURL
著者
Yamagiwa, Masashi Department of Bioscience and Biotechnology Okayama University
Sakai, Hiroshi Department of Bioscience and Biotechnology Okayama University
抄録
An active form of Cry4A is a heterodimer of the 20- and 45-kDa fragments that are derived from the 130-kDa Cry4A protoxin. To investigate the function of these two fragments, several deletion mutants were constructed and expressed in E.coli as the GST (glutathione-S-transferase) fusion proteins. The results of the bioassay against Culex pipiens larvae showed that the interaction of two fragments of Cry4A was necessary for the toxicity, and that the C-terminal 67 amino acids of the 20-kDa fragment corresponding to the helices α4 and α5 were involved in determining the insecticidal activity. Surprisingly the lack of helix α5 did not affect the toxicity to C. pipiens, suggesting that the role of helix α5 of Cry4A was different from that postulated in the case of Cry4A toxins.
出版物タイトル
Memoirs of the Faculty of Engineering, Okayama University
発行日
2003-03
37巻
2号
出版者
Faculty of Engineering, Okayama University
開始ページ
67
終了ページ
72
ISSN
0475-0071
NCID
AA10699856
資料タイプ
紀要論文
OAI-PMH Set
岡山大学
言語
English
論文のバージョン
publisher
NAID
Eprints Journal Name
mfe