ISDA

Entry Detail

PDB ID:

3LDP

Keywords:

Title:

Crystal structure of human GRP78 (70kDa heat shock protein 5 / BIP) ATPase domain in complex with small molecule inhibitor

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2010-01-13

Release Date:

2011-01-26

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.20 Å

R-Value Free:

0.29

R-Value Work:

0.20

R-Value Observed:

0.21

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:78 kDa glucose-regulated protein
Chain IDs:A, B
Chain Length:384
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P11021 Pfam ID:PF00012

Ligand Molecules

3P1

Primary Citation

Adenosine-Derived Inhibitors of 78 kDa Glucose Regulated Protein (Grp78) ATPase: Insights into Isoform Selectivity.

Macias, A.T, Williamson, D.S, Allen, N, Borgognoni, J, Clay, A, Daniels, Z, Dokurno, P, Drysdale, M.J, Francis, G.L, Graham, C.J, Howes, R, Matassova, N, Murray, J.B, Parsons, R, Shaw, T, Surgenor, A.E, Terry, L, Wang, Y, Wood, M, Massey, A.J.Show

J.Med.Chem. 54 4034 4041 (2011)

PMID: 21526763 DOI: 10.1021/jm101625x

Abstact

78 kDa glucose-regulated protein (Grp78) is a heat shock protein (HSP) involved in protein folding that plays a role in cancer cell proliferation. Binding of adenosine-derived inhibitors to Grp78 was characterized by surface plasmon resonance and isothermal titration calorimetry. The most potent compounds were 13 (VER-155008) with K(D) = 80 nM and 14 with K(D) = 60 nM. X-ray crystal structures of Grp78 bound to ATP, ADPnP, and adenosine derivative 10 revealed differences in the binding site between Grp78 and homologous proteins.

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