8cri

Crystal structure of LplA1 in complex with lipoic acid (Listeria monocytogenes)

spinqualitylabelsall models 8cri, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8cri is a 2 chain structure with sequence from Listeria monocytogenes. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: CL, EDO, LPA, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A1D2IX29_LISMN Publication Abstract from PubMed The development of novel anti-infectives requires unprecedented strategies targeting pathways which are solely present in pathogens but absent in humans. Following this principle, we developed inhibitors of lipoic acid (LA) salvage, a crucial pathway for the survival of LA auxotrophic bacteria and parasites but non-essential in human cells. An LA-based probe was selectively transferred onto substrate proteins via lipoate protein ligase (LPL) in intact cells, and their binding sites were determined by mass spectrometry. Probe labeling served as a proxy of LPL activity, enabling in-situ screenings for cell-permeable LPL inhibitors. Profiling a focused compound library revealed two substrate analogs (LAMe and C3) as inhibitors, which were further validated by binding studies and co-crystallography. Importantly, LAMe exhibited low toxicity in human cells and achieved killing of Plasmodium falciparum in erythrocytes with an EC50 value of 15 microM, making it the most effective LPL inhibitor reported to date. A Chemical Proteomic Strategy Reveals Inhibitors of Lipoate Salvage in Bacteria and Parasites.,Dienemann JN, Chen SY, Hitzenberger M, Sievert ML, Hacker SM, Prigge ST, Zacharias M, Groll M, Sieber SA Angew Chem Int Ed Engl. 2023 May 30:e202304533. doi: 10.1002/anie.202304533. PMID:37249408 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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