Examine the Correlation between Heat Shock Protein Ibp A and Heat Tolerance in Cronobacter sakazakii(无全文)

作者:ZHAO Zhi Jing;WANG Bin;YUAN Jing;LIANG Hao Yu;DONG Si Guo;ZENG Ming; 刊名:Biomedical and Environmental Sciences 上传者:

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【摘要】We used a proteomic approach to identify Ibp A in Cronobacter sakazakii(C. sakazaki), which is related to heat tolerance in this strain. The abundance of Ibp A in C. sakazakii strains strongly increased after heat shock. C. sakazakii CMCC45402 ibpA deletion mutants were successfully constructed. The C. sakazakii CMCC 45402 ΔibpA and wild-type strains could not be distinguished based on colony morphology on LB agar plates or biochemical assays. The growth of the C. sakazaki CMCC 45402 ΔibpA mutant in heat shock conditions was indistinguishable from that of the isogenic wild-type, but showed greater heat resistance than E. coli O157:H7 strain CMCC 44828. This study suggests that the absence of a single ibpA gene has no obvious effect on the phenotype or heat resistance of the strain C. sakazakii CMCC 45402.

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