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- W1978370367 abstract "Dominant negative inhibition is most commonly seen when a mutant subunit of a multisubunit protein is coexpressed with the wild-type protein so that assembly of a functional oligomer is impaired. By analogy, it should be possible to interfere with the functional assembly of a monomeric enzyme by interfering with the folding pathway. Experiments in vitro by others suggested that fragments of a monomeric enzyme might be exploited for this purpose. We report here dominant negative inhibition of bacterial cell growth by expression of fragments of a tRNA synthetase. Inhibition is fragment-specific, as not all fragments cause inhibition. An inhibitory fragment characterized in more detail forms a specific complex with the intact enzyme in vivo , leading to enzyme inactivation. This fragment also associated stoichiometrically with the full-length enzyme in vitro after denaturation and refolding, and the resulting complex was catalytically inactive. Inhibition therefore appears to arise from an interruption in the folding pathway of the wild-type enzyme, thus suggesting a new strategy to design dominant negative inhibitors of monomeric enzymes." @default.
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- W1978370367 date "1996-12-10" @default.
- W1978370367 modified "2023-10-14" @default.
- W1978370367 title "Dominant negative inhibition by fragments of a monomeric enzyme" @default.
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- W1978370367 doi "https://doi.org/10.1073/pnas.93.25.14452" @default.
- W1978370367 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/26153" @default.
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