Differential expression protein between the thuringiensin-yield Bacillus thur-ingiensis strain CT-43 and its mutants
苏云金芽胞杆菌产苏云金素菌株CT-43及其 缺失突变株的差异蛋白

Objective] The purpose of this research is trying to uncover the biosynthetic or metabolic relative protein of thuringiensis by proteomics. Methods] We conducted differential expression analysis between the high thuringiensin-yield Bacillus thuringiensis strain CT-43 and its mutants, high production strain CT-43-1C and non-production strain BMB0806, based on the 2-D gel. Then through mass spectrum (MS) identification and bio-informatics we analyzed the detected proteins. Results] Thirteen spots were selected to be detected by the MS, and nine of them were identified. Among them, six proteins including in the basal metabolism pathway were possibly deduced that relative with the synthesis or metabolism of thuringiensin production. Conclusion] There were six proteins found to be connected with the influential role protein of biosynthesis and metabolic of thuringiensin production by comparative proteomics. This research provides the evidence of thuringiensis gene cluster cloning and biosynthetic analysis.