ISDA

Entry Detail

PDB ID:

1T4E

Keywords:

LIGASE

Title:

Structure of Human MDM2 in complex with a Benzodiazepine Inhibitor

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli BL21

PDB Version:

Deposition Date:

2004-04-29

Release Date:

2005-02-08

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.60 Å

R-Value Free:

0.27

R-Value Work:

0.23

Space Group:

P 32 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Ubiquitin-protein ligase E3 Mdm2
Mutations:17-111, additional GLY at N-terminus
Chain IDs:A, B
Chain Length:96
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q00987 Pfam ID:PF02201 EC:2.3.2.27

Ligand Molecules

DIZ

Primary Citation

Discovery and cocrystal structure of benzodiazepinedione HDM2 antagonists that activate p53 in cells

Grasberger, B.L, Lu, T, Schubert, C, Parks, D.J, Carver, T.E, Koblish, H.K, Cummings, M.D, LaFrance, L.V.Show

J.Med.Chem. 48 909 912 (2005)

PMID: 15715460 DOI: 10.1021/jm049137g

Abstact

HDM2 binds to an alpha-helical transactivation domain of p53, inhibiting its tumor suppressive functions. A miniaturized thermal denaturation assay was used to screen chemical libraries, resulting in the discovery of a novel series of benzodiazepinedione antagonists of the HDM2-p53 interaction. The X-ray crystal structure of improved antagonists bound to HDM2 reveals their alpha-helix mimetic properties. These optimized molecules increase the transcription of p53 target genes and decrease proliferation of tumor cells expressing wild-type p53.

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Primary Citation of related structures