Trimethoprim induces heat shock proteins and protein aggregation in E. coli cells.

Article Details

Citation

Laskowska E, Kuczynska-Wisnik D, Bak M, Lipinska B

Trimethoprim induces heat shock proteins and protein aggregation in E. coli cells.

Curr Microbiol. 2003 Oct;47(4):286-9.

PubMed ID
14629008 [ View in PubMed
]
Abstract

Trimethoprim (TMP), an inhibitor of dihydrofolate reductase, decreases the level of tetrahydrofolate supplying one-carbon units for biosynthesis of nucleotides, proteins, and panthotenate. We have demonstrated for the first time that one of the effects of the TMP action in E. coli cells is protein aggregation and induction of heat shock proteins (Hsps). TMP caused induction of DnaK, DnaJ, GroEL, ClpB, and IbpA/B Hsps. Among these Hsps, IbpA/B were most efficiently induced by TMP and coaggregated with the insoluble proteins. Upon folate stress, deletion of the delta ibpA/B operon resulted in increased protein aggregation but did not influence cell viability.

DrugBank Data that Cites this Article

Drug Targets
DrugTargetKindOrganismPharmacological ActionActions
TrimethoprimDihydrofolate reductaseProteinEscherichia coli (strain K12)
Yes
Inhibitor
Details