EFFECTS OF BACILLUS-THURINGIENSIS DELTA-ENDOTOXIN ON THE PERMEABILITY OF BRUSH-BORDER MEMBRANE-VESICLES FROM TOBACCO HORNWORM (MANDUCA-SEXTA) MIDGUT

被引：33

作者：

HENDRICKX, K ^{[1
]}

DELOOF, A ^{[1
]}

VANMELLAERT, H ^{[1
]}

机构：

[1] PLANT GENET SYST NV, B-9000 GHENT, BELGIUM

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY | 1990年 / 95卷 / 02期

关键词：

D O I：

10.1016/0742-8413(90)90112-M

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

1. 1. The effect of two recombinant Bacillus thuringiensis delta-endotoxins on brush border membrane vesicles of Manduca sexta midgut was investigated using an in vitro assay system, based on ion-amino acid cotransport. 2. 2. A CryIA(b)-toxin provoked an increase in the permeability of the vesicles. 3. 3. A CryIB-toxin, not toxic to M. sexta larvae in vivo, had no effect in our assay. 4. 4. In contrast to earlier reports, the increase in permeability was found to be neither selective for K+ nor specifically inhibited by Ca2+ or Ba2+. 5. 5. Our data support the hypothesis that B. thuringiensis delta-endotoxins create non-specific pores. © 1990.

引用

页码：241 / 245

页数：5

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