Abstract
Ribozyme glmS based isothermal amplification assay is developed for the colorimetric detection of glucosamine-6-phosphate (GlcN6P). Upon binding to the metabolite target GlcN6P, self-cleavage of glmS ribozyme is initiated to release RNA fragment that can trigger the cascade signal amplification to release large amount of G-quadruplex DNAzymes as reporter for colorimetric detection. Given the importance of GlcN6P for cell wall biosynthesis, the glmS riboswitch has become a new drug target for the development of antibiotics. This assay not only offers a convenient detection of GlcN6P with high specificity and sensitivity, but also provides a platform for high-throughput screening of antibiotics based on glmS riboswitches.
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