6YYP image
Deposition Date 2020-05-05
Release Date 2021-05-12
Last Version Date 2024-10-16
Entry Detail
PDB ID:
6YYP
Keywords:
HYDROLASE
Title:
Structure of Cathepsin S in complex with Compound 2
Biological Source:
Source Organism(s):
Homo sapiens (Taxon ID: 9606)
Expression System(s):
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.05 Å
R-Value Free:
0.18
R-Value Work:
0.14
Space Group:
H 3 2
6YYP validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cathepsin S
Gene (Uniprot):CTSS
Chain IDs:A (auth: AAA), B (auth: BBB)
Chain Length:225
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P25774 Pfam ID:PF00112 EC:3.4.22.27
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CSO A CYS modified residue
Ligand Molecules
ACT
MLA
Q1H
SIN
Primary Citation
Highly Selective Sub-Nanomolar Cathepsin S Inhibitors by Merging Fragment Binders with Nitrile Inhibitors.
J.Med.Chem. 63 11801 11808 (2020)
PMID: 32880457 DOI: 10.1021/acs.jmedchem.0c00949

Abstact

Pharmacological inhibition of cathepsin S (CatS) allows for a specific modulation of the adaptive immune system and many major diseases. Here, we used NMR fragment screening and crystal structure-aided merging to synthesize novel, highly selective CatS inhibitors with picomolar enzymatic Ki values and nanomolar functional activity in human Raji cells. Noncovalent fragment hits revealed binding hotspots, while the covalent inhibitor structure-activity relationship enabled efficient potency optimization.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
6YYP
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