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- W1997335051 abstract "Over 30 years ago, ZTP (5-aminoimidazole-4-carboxamide riboside 5'-triphosphate), a modified purine biosynthetic intermediate, was proposed to signal 10-formyl-tetrahydrofolate (10f-THF) deficiency in bacteria. However, the mechanisms by which this putative alarmone or its precursor ZMP (5-aminoimidazole-4-carboxamide ribonucleotide, also known as AICAR) brings about any metabolic changes remain unexplained. Herein, we report the existence of a widespread riboswitch class that is most commonly associated with genes related to de novo purine biosynthesis and one-carbon metabolism. Biochemical data confirm that members of this riboswitch class selectively bind ZMP and ZTP with nanomolar affinity while strongly rejecting numerous natural analogs. Indeed, increases in the ZMP/ZTP pool, caused by folate stress in bacterial cells, trigger changes in the expression of a reporter gene fused to representative ZTP riboswitches in vivo. The wide distribution of this riboswitch class suggests that ZMP/ZTP signaling is important for species in numerous bacterial lineages." @default.
- W1997335051 created "2016-06-24" @default.
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- W1997335051 date "2015-01-01" @default.
- W1997335051 modified "2023-10-16" @default.
- W1997335051 title "An Ancient Riboswitch Class in Bacteria Regulates Purine Biosynthesis and One-Carbon Metabolism" @default.
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- W1997335051 doi "https://doi.org/10.1016/j.molcel.2015.01.001" @default.
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