7zxs
Crystal structure of DPP9 in complex with a 4-oxo-b-lactam based inhibitor, A295Crystal structure of DPP9 in complex with a 4-oxo-b-lactam based inhibitor, A295
Structural highlights
DiseaseDPP9_HUMAN Idiopathic pulmonary fibrosis. FunctionDPP9_HUMAN Dipeptidyl peptidase that cleaves off N-terminal dipeptides from proteins having a Pro or Ala residue at position 2. Publication Abstract from PubMedDipeptidyl peptidases 8 and 9 (DPP8/9) have gathered interest as drug targets due to their important roles in biological processes like immunity and tumorigenesis. Elucidation of their distinct individual functions remains an ongoing task and could benefit from the availability of novel, chemically diverse and selective chemical tools. Here, we report the activity-based protein profiling (ABPP)-mediated discovery of 4-oxo-beta-lactams as potent, non-substrate-like nanomolar DPP8/9 inhibitors. X-ray crystallographic structures revealed different ligand binding modes for DPP8 and DPP9, including an unprecedented targeting of an extended S2' (eS2') subsite in DPP8. Biological assays confirmed inhibition at both target and cellular levels. Altogether, our integrated chemical proteomics and structure-guided small molecule design approach led to novel DPP8/9 inhibitors with alternative molecular inhibition mechanisms, delivering the highest selectivity index reported to date. Chemoproteomics-Enabled Identification of 4-Oxo-beta-Lactams as Inhibitors of Dipeptidyl Peptidases 8 and 9.,Carvalho LAR, Ross B, Fehr L, Bolgi O, Wohrle S, Lum KM, Podlesainski D, Vieira AC, Kiefersauer R, Felix R, Rodrigues T, Lucas SD, Gross O, Geiss-Friedlander R, Cravatt BF, Huber R, Kaiser M, Moreira R Angew Chem Int Ed Engl. 2022 Nov 21;61(47):e202210498. doi: , 10.1002/anie.202210498. Epub 2022 Oct 28. PMID:36089535[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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