نتایج جستجو برای: bacillus thuringiensis subsp israelensis
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The replication origins of three large Bacillus thuringiensis plasmids, derived from B. thuringiensis HD263 subsp. kurstaki, have been cloned in Escherichia coli and sequenced. The replication origins, designated ori 43, ori 44, and ori 60, were isolated from plasmids of 43, 44, and 60 MDa, respectively. Each cloned replication origin exhibits incompatibility with the resident B. thuringiensis ...
Dipteran-specific insecticidal protein Cry4A is produced as a protoxin of 130 kDa in Bacillus thuringiensis subsp. israelensis. Here we performed the in vitro processing of Cry4A and showed that the 130-kDa protoxin of Cry4A was processed into the two protease-resistant fragments of 20 and 45 kDa through the intramolecular cleavage of a 60-kDa intermediate. The processing into these two fragmen...
The two predominant polypeptides of the Bacillus thuringiensis subsp. thompsoni crystal are encoded by the cry40 and cry34 genes. These crystal protein genes are located in an operon. Western analysis (immunoblotting) demonstrated that the operon promoter activity was located in the region upstream of the cry40 gene. The Cry34 protein was expressed only when the upstream promoter region was pre...
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