Bacterial nucleotide biosynthesis pathway

Bacterial nucleotides encompass the essential purine and pyrimidine precursors required for the synthesis of DNA and RNA, as well as specialized signaling alarmones like (p)ppGpp and cyclic dinucleotides (CDNs) that regulate bacterial physiology (PubMed, PMC). The bacterial nucleotide biosynthesis pathway is a critical therapeutic target because bacteria depend on both de novo synthesis and salvage pathways to maintain the nucleotide pools necessary for rapid proliferation and survival within a host; disruption of these pathways by drugs like sulfonamides and trimethoprim prevents bacterial growth by depleting metabolic precursors (NIH, PubMed). In addition to primary metabolism, signaling nucleotides like (p)ppGpp regulate the 'stringent response,' a survival mechanism that enables bacteria to tolerate nutrient deprivation and antibiotic stress, contributing to persistence and biofilm formation (PubMed, ResearchGate). Furthermore, bacterial-derived nucleotides such as CDNs and unmethylated CpG motifs are recognized by the host innate immune system via receptors like STING and TLR9, respectively, making them valuable targets for the development of vaccine adjuvants and immunotherapies (Frontiers, MDPI).

Other names

Bacterial nucleotidesBacterial nucleotide metabolismBacterial purine and pyrimidine synthesisBacterial signaling nucleotidesBacterial alarmones(p)ppGpp signaling pathway

Inhibition of essential nucleotide precursor synthesis (e.g., folate synthesis), competitive inhibition of biosynthetic enzymes such as dihydrofolate reductase (DHFR), and modulation of stress-signaling nucleotide levels to disrupt bacterial persistence.