Protein aggregation and inclusion body formation in Escherichia coli rpoH mutant defective in heat shock protein induction

FEBS Letters

Gragerov, A.I.¹  Krupenko, M.A.¹  Kashlev, M.V.¹  Martin, E.S.¹  Nikiforov, V.G.¹ 

[1] Institute of Molecular Genetics, USSR Academy of Sciences, Moscow 123182, USSR

关键词: Heat shock protein;    Inclusion body;    Protein folding;    rpoH mutant;    Chaperone;   

DOI  :  10.1016/0014-5793(91)81289-K

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Mutations in the rpoH gene, encoding σ³², an alternative factor required for transcription of the heat shock genes, result in the extensive aggregation of virtually all cellular proteins and formation of inclusion bodies both under stress and non-stress conditions. Inhibitors of protein synthesis suppress this aggregation, suggesting that newly synthesized proteins preferentially aggregate in rpoH mutants. These data suggest that the heat shock proteins are involved in acquisition of the soluble state (i.e. correct conformation) of the bulk of intracellular proteins after their translation.

【 授权许可】

Unknown