7A3G

Crystal structure of DPP8 in complex with a 4-oxo-b-lactam based inhibitor, 91

Summary for 7A3G

• Entry DOI: 10.2210/pdb7a3g/pdb
• Related: 6EOP
• Descriptor: Dipeptidyl peptidase 8, trimethylamine oxide, ~{N}-[3-(7,8-dihydro-5~{H}-[1,3]dioxolo[4,5-g]isoquinolin-6-ylmethyl)phenyl]-2-ethyl-2-methanoyl-butanamide, ... (8 entities in total)
• Functional Keywords: dpp8, protease, hydrolase
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 2
• Total formula weight: 210096.12

Authors

Ross, B.H.,Huber, R. (deposition date: 2020-08-18, release date: 2021-06-30, Last modification date: 2024-10-16)

Primary citation

Carvalho, L.A.R.,Ross, B.,Fehr, L.,Bolgi, O.,Wohrle, S.,Lum, K.M.,Podlesainski, D.,Vieira, A.C.,Kiefersauer, R.,Felix, R.,Rodrigues, T.,Lucas, S.D.,Gross, O.,Geiss-Friedlander, R.,Cravatt, B.F.,Huber, R.,Kaiser, M.,Moreira, R.
Chemoproteomics-Enabled Identification of 4-Oxo-beta-Lactams as Inhibitors of Dipeptidyl Peptidases 8 and 9.
Angew.Chem.Int.Ed.Engl., 2022

PubMed Abstract: Dipeptidyl 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-β-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.

PubMed: 36089535
DOI: 10.1002/anie.202210498

Experimental method

X-RAY DIFFRACTION (2.8 Å)