Abstract

The T box antiterminator RNA element is an important component of the T box riboswitch that controls the transcription of vital genes in many Gram-positive bacteria. A series of 1,4-disubstituted 1,2,3-triazoles was screened in a fluorescence-monitored thermal denaturation assay to identify ligands that altered the stability of antiterminator model RNA. Several ligands were identified that significantly increased or decreased the melting temperature (T(m) ) of the RNA. The results indicate that this series of triazole ligands can alter the stability of antiterminator model RNA in a structure-dependent manner.

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