3RLR image
Deposition Date 2011-04-20
Release Date 2011-06-08
Last Version Date 2024-02-28
Entry Detail
PDB ID:
3RLR
Keywords:
CHAPERONE
Title:
Co-crystal structure of the HSP90 ATP binding domain in complex with 4-(2,4-dichloro-5-methoxyphenyl)-2,6-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.70 Å
R-Value Free:
0.20
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 21 21 21
3RLR validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Heat shock protein HSP 90-alpha
Gene (Uniprot):HSP90AA1
Chain IDs:A, B
Chain Length:226
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P07900 Pfam ID:PF13589 EC:3.6.4.10
Ligand Molecules
3RR
PO4
Primary Citation
Design strategies to target crystallographic waters applied to the Hsp90 molecular chaperone.
Bioorg.Med.Chem.Lett. 21 3557 3562 (2011)
PMID: 21612924 DOI: 10.1016/j.bmcl.2011.04.130

Abstact

A series of novel and potent small molecule Hsp90 inhibitors was optimized using X-ray crystal structures. These compounds bind in a deep pocket of the Hsp90 enzyme that is partially comprised by residues Asn51 and Ser52. Displacement of several water molecules observed crystallographically in this pocket using rule-based strategies led to significant improvements in inhibitor potency. An optimized inhibitor (compound 17) exhibited potent Hsp90 inhibition in ITC, biochemical, and cell-based assays (K(d)=1.3 nM, K(i)=15 nM, and cellular IC(50)=0.5 μM).

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Disease

Primary Citation of related structures
3RLP
3RLQ