LARVICIDAL PROPERTIES OF THE 42-KILODALTON AND 51-KILODALTON BACILLUS-SPHAERICUS PROTEINS EXPRESSED IN DIFFERENT BACTERIAL HOSTS - EVIDENCE FOR A BINARY TOXIN

被引：52

作者：

BROADWELL, AH ^{[1
]}

BAUMANN, L ^{[1
]}

BAUMANN, P ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT MICROBIOL,DAVIS,CA 95616

来源：

CURRENT MICROBIOLOGY | 1990年 / 21卷 / 06期

关键词：

D O I：

10.1007/BF02199438

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The 51 kilodalton (kDa) and the 42 kDa larvicidal proteins of Bacillus sphaericus 2362 appear to reside on a single transcriptional unit. Constructs containing the genes for both of these proteins or for only the 51 kDa or the 42 kDa protein were inserted into the appropriate expression vectors and the proteins over-produced in Escherichia coli JM105, and Bacillus sphaericus strain 718 and SSII-1. In all of these organisms the 51 kDa and 42 kDa proteins were not toxic alone but were toxic in combination. These results are interpreted to indicate that the Bacillus sphaericus 2362 larvicide is a binary toxin in that both the 51 and the 42 kDa proteins are required for toxicity. © 1990 Springer-Verlag New York Inc.

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页码：361 / 366

页数：6

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