Pseudomonas aeruginosa DNA

Pseudomonas aeruginosa DNA refers to the genomic material of the Gram-negative bacterium Pseudomonas aeruginosa, a opportunistic pathogen responsible for severe nosocomial infections, particularly in immunocompromised patients. The genome is a single circular chromosome of 5.5–7 Mbp with 65–67% G+C content, plus variable plasmids, featuring a conserved core and accessory segments that enable antibiotic resistance, virulence factor acquisition, and adaptability. It supports essential processes like replication, transcription, and regulation via numerous genes for efflux pumps, beta-lactamases, and transcriptional regulators. Notably, type IV pili of P. aeruginosa bind this DNA in a concentration-dependent, saturable manner, aiding biofilm formation on surfaces during infection or colonization, twitching motility, and potentially enhancing DNA uptake despite the bacterium not being naturally transformable. Regulatory proteins like RsaL bind specific DNA sequences to control quorum sensing and virulence gene expression. While not a direct therapeutic target like enzymes or receptors, the DNA and its processing elements (e.g., polymerases like DinB) are indirectly implicated in resistance and survival strategies. No drugs directly target P. aeruginosa DNA itself; instead, antibiotics like fluoroquinolones act on associated topoisomerases (e.g., GyrA). This broad "target" lacks specificity for drug development, as it encompasses the entire genome rather than a discrete protein or functional unit.

Other names

P. aeruginosa genomic DNAbacterial DNA of Pseudomonas aeruginosa