7OZ7 image
Deposition Date 2021-06-26
Release Date 2021-07-14
Last Version Date 2024-10-16
Entry Detail
PDB ID:
7OZ7
Keywords:
Title:
Crystal structure of DPP8 in complex with a 4-oxo-b-lactam based inhibitor, L84
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.60 Å
R-Value Free:
0.25
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 61
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Dipeptidyl peptidase 8
Gene (Uniprot):DPP8
Chain IDs:A, B
Chain Length:898
Number of Molecules:2
Biological Source:Homo sapiens
Primary Citation
Chemoproteomics-Enabled Identification of 4-Oxo-beta-Lactams as Inhibitors of Dipeptidyl Peptidases 8 and 9.
Angew.Chem.Int.Ed.Engl. 61 e202210498 e202210498 (2022)
PMID: 36089535 DOI: 10.1002/anie.202210498

Abstact

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.

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