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
鸟苷五磷酸或四磷酸鸟嘌呤(分别为pppGpp或ppGpp)是一种核苷酸信号分子,在压力下对细菌生理学具有显着影响。它的积累减慢了细胞的代谢和复制,据推测导致了抗生素耐受性持久性表型的形成。专门定制的荧光化学传感器PyDPA可以相对于其他核苷酸,以高选择性检测溶液中的(p)ppGpp。本文中,提出了一种优化的合成方法,可通过7个步骤将总收率从9%提高到67%。这种方法的简单性和鲁棒性使研究小组可以轻松地研究(p)ppGpp的许多方面。