Fragment Discovery by X-Ray Crystallographic Screening Targeting the CTP Binding Site of Pseudomonas Aeruginosa IspD.

ABSTRACT: With antimicrobial resistance (AMR) reaching alarming levels, new anti-infectives with unprecedented mechanisms of action are urgently needed. The 2-C-methylerythritol-D-erythritol-4-phosphate (MEP) pathway represents an attractive source of drug targets due to its essential role in numerous pathogenic Gram-negative bacteria and Mycobacterium tuberculosis (Mt), whilst being absent in human cells. Here, we solved the first crystal structure of Pseudomonas aeruginosa (Pa) IspD, the third enzyme in the MEP pathway and present the discovery of a fragment-based compound class identified through crystallographic screening of PaIspD. The initial fragment occupies the CTP binding cavity within the active site. Confirmation of fragment-protein interactions was achieved through ¹H saturat

SUBMITTER: Willocx D 

PROVIDER: S-EPMC11796317 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature