ISDA

Deposition Date 2014-08-19

Release Date 2014-11-19

Last Version Date 2023-09-20

Entry Detail

PDB ID:

4R4I

Keywords:

PROTEIN BINDING

Title:

Structure of RPA70N in complex with 5-(4-((6-(5-carboxyfuran-2-yl)-1-thioxo-3,4-dihydroisoquinolin-2(1H)-yl)methyl)phenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.40 Å

R-Value Free:

0.19

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Replication protein A 70 kDa DNA-binding subunit
Gene (Uniprot):RPA1
Mutations:E7R
Chain IDs:A
Chain Length:123
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P27694 Pfam ID:PF04057

Ligand Molecules

3HV

Primary Citation

Diphenylpyrazoles as replication protein a inhibitors.

Waterson, A.G, Kennedy, J.P, Patrone, J.D, Pelz, N.F, Feldkamp, M.D, Frank, A.O, Vangamudi, B, Souza-Fagundes, E.M, Rossanese, O.W, Chazin, W.J, Fesik, S.W.Show

ACS Med Chem Lett 6 140 145 (2015)

PMID: 25699140 DOI: 10.1021/ml5003629

Abstact

Replication Protein A is the primary eukaryotic ssDNA binding protein that has a central role in initiating the cellular response to DNA damage. RPA recruits multiple proteins to sites of DNA damage via the N-terminal domain of the 70 kDa subunit (RPA70N). Here we describe the optimization of a diphenylpyrazole carboxylic acid series of inhibitors of these RPA-protein interactions. We evaluated substituents on the aromatic rings as well as the type and geometry of the linkers used to combine fragments, ultimately leading to submicromolar inhibitors of RPA70N protein-protein interactions.

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Primary Citation of related structures