Abstract
AbstractD‐alanine: D‐alanine ligase (Rv2981c or Ddl) (EC 6.3.2.4) is a bacterial protein that performs critical functions for the proper growth and development of bacterial cells. Understanding the activity profile of Ddl within the various strains of the bacteria seems vital in broad‐spectrum antimicrobial drug discovery. Therefore, to understand this heterologous nature, we focused on understanding the functional impact of the structural differences in the Ddl protein from Legionella pneumophila and E. coli bacteria. The structural features and dynamic behavior of Ddl, the interaction pattern, and the docking score of the Ddl‐ATP/ADP are also found significantly different from each other. In‐depth analysis viz molecular dynamics simulation and residue interaction network (RIN) studies provided us the detailed insight into the differences in the Ddl proteins from both the bacteria. In conclusion, understanding the inter‐specific differences in the antibiotic targets Ddl in the case of diverse bacterial strains is vital for rationalizing the treatment of these infectious diseases. Therefore, the current work attempts to foresee the development of more efficacious antibacterial agents devoid of emerging resistance to bacterium strains.
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