ISDA

Deposition Date 2011-06-22

Release Date 2011-08-31

Last Version Date 2024-11-27

Entry Detail

PDB ID:

3SKA

Keywords:

transferase/transferase INHIBITOR

Title:

I. Novel HCV NS5B Polymerase Inhibitors: Discovery of Indole 2- Carboxylic Acids with C3-Heterocycles

Biological Source:

Source Organism:

Hepatitis C virus isolate HC-J4 (Taxon ID: 420174)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.73 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:HCV NS5B RNA_DEPENDENT RNA POLYMERASE
Chain IDs:A, B
Chain Length:576
Number of Molecules:2
Biological Source:Hepatitis C virus isolate HC-J4

UniProt ID:O92972 Pfam ID:PF00998 EC:2.7.7.48

Primary Citation

I. Novel HCV NS5B polymerase inhibitors: discovery of indole 2-carboxylic acids with C3-heterocycles.

Anilkumar, G.N, Lesburg, C.A, Selyutin, O, Rosenblum, S.B, Zeng, Q, Jiang, Y, Chan, T.Y, Pu, H, Vaccaro, H, Wang, L, Bennett, F, Chen, K.X, Duca, J, Gavalas, S, Huang, Y, Pinto, P, Sannigrahi, M, Velazquez, F, Venkatraman, S, Vibulbhan, B, Agrawal, S, Butkiewicz, N, Feld, B, Ferrari, E, He, Z, Jiang, C.K, Palermo, R.E, McMonagle, P, Huang, H.C, Shih, N.Y, Njoroge, G, Kozlowski, J.A.Show

Bioorg.Med.Chem.Lett. 21 5336 5341 (2011)

PMID: 21840715 DOI: 10.1016/j.bmcl.2011.07.021

Abstact

SAR development of indole-based palm site inhibitors of HCV NS5B polymerase exemplified by initial indole lead 1 (NS5B IC(50)=0.9 μM, replicon EC(50)>100 μM) is described. Structure-based drug design led to the incorporation of novel heterocyclic moieties at the indole C3-position which formed a bidentate interaction with the protein backbone. SAR development resulted in leads 7q (NS5B IC(50)=0.032 μM, replicon EC(50)=1.4 μM) and 7r (NS5B IC(50)=0.017 μM, replicon EC(50)=0.3 μM) with improved enzyme and replicon activity.

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