Optimised Synthesis of the Bacterial Magic Spot (p)ppGpp Chemosensor PyDPA
作者:Gabriele Conti、Marco Minneci、Sara Sattin
DOI:10.1002/cbic.201900013
日期:2019.7
Guanosine penta- or tetraphosphate (pppGpp or ppGpp, respectively) is a nucleotide signalling molecule with a marked effect on bacterial physiology during stress. Its accumulation slows down cell metabolism and replication, supposedly leading to the formation of the antibiotic-tolerant persister phenotype. A specifically tailored fluorescent chemosensor, PyDPA, allows the detection of (p)ppGpp in solution
Selective Fluorescent Chemosensor for the Bacterial Alarmone (p)ppGpp
作者:Hyun-Woo Rhee、Chang-Ro Lee、Seung-Hyon Cho、Mi-Ryung Song、Michael Cashel、Hyon E. Choy、Young-Jae Seok、Jong-In Hong
DOI:10.1021/ja0759139
日期:2008.1.1
We have developed the first selective fluorescent chemosensor (PyDPA) for (p)ppGpp, a bacterial and plant alarmone. By using pyrene-excimer fluorescence, PyDPA shows very good selectivity for (p)ppGpp from among other nucleotides in water. PyDPA was used for the real-time detection of in vitro ppGppsynthesis by bacterial ribosomal complexes.