Dam-replacing gene endonuclease (Drg)

Dam-replacing gene endonuclease, or Drg endonuclease, is a DNA-cleaving enzyme primarily identified in pathogenic bacteria such as Neisseria gonorrhoeae and Neisseria meningitidis [1, 2]. It is encoded by the drg gene, which replaces the canonical dam (DNA adenine methyltransferase) gene found in most other Proteobacteria [1, 6]. Functionally, Drg acts as a restriction-like endonuclease that specifically recognizes and cleaves methylated GATC sequences (GmeATC), a role that is vital for maintaining the bacterial life cycle and regulating gene expression [1, 4]. Research has shown that Drg is essential for bacterial viability, biofilm formation, and the ability of the pathogen to adhere to host epithelial cells [1, 2]. Consequently, it has emerged as a promising therapeutic target for the development of new antimicrobial agents, particularly against multidrug-resistant strains of N. gonorrhoeae [1, 4]. Targeting this enzyme could potentially disrupt the pathogen's ability to colonize and survive within the human host while minimizing impact on the host's own genetic machinery [1, 6].

Other names

Drg proteinNmeBIIngo0007Dam-replacing gene product

Inhibition of DNA cleavage activity at methylated GATC sites to disrupt bacterial gene regulation and viability.