ISDA

Entry Detail

PDB ID:

3CWJ

Keywords:

TRANSFERASE, VIRAL PROTEIN

Title:

Crystal structure of hcv ns5b polymerase with a novel pyridazinone inhibitor

Biological Source:

Source Organism:

Hepatitis C virus

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2008-04-21

Release Date:

2009-04-21

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.40 Å

R-Value Free:

0.29

R-Value Work:

0.23

R-Value Observed:

0.24

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:RNA-DIRECTED RNA POLYMERASE
Mutations:R544Q
Chain IDs:A, B
Chain Length:578
Number of Molecules:2
Biological Source:Hepatitis C virus

UniProt ID:P26663 Pfam ID:PF00998 EC:3.4.21.98

Ligand Molecules

321

Primary Citation

4-(1,1-Dioxo-1,4-dihydro-1lambda6-benzo[1,4]thiazin-3-yl)-5-hydroxy-2H-pyridazin-3-ones as potent inhibitors of HCV NS5B polymerase

Ellis, D.A, Blazel, J.K, Webber, S.E, Tran, C.V, Dragovich, P.S, Sun, Z, Ruebsam, F, McGuire, H.M, Xiang, A.X, Zhao, J, Li, L.S, Zhou, Y, Han, Q, Kissinger, C.R, Showalter, R.E, Lardy, M, Shah, A.M, Tsan, M, Patel, R, LeBrun, L.A, Kamran, R, Bartkowski, D.M, Nolan, T.G, Norris, D.A, Sergeeva, M.V, Kirkovsky, L.Show

Bioorg.Med.Chem.Lett. 18 4628 4632 (2008)

PMID: 18662878 DOI: 10.1016/j.bmcl.2008.07.014

Abstact

4-(1,1-Dioxo-1,4-dihydro-1lambda(6)-benzo[1,4]thiazin-3-yl)-5-hydroxy-2H-pyridazin-3-one analogs were discovered as a novel class of inhibitors of HCV NS5B polymerase. Structure-based design led to the identification of compound 3a that displayed potent inhibitory activities in biochemical and replicon assays (1b IC(50)<10 nM; 1b EC(50)=1.1 nM) as well as good stability toward human liver microsomes (HLM t(1/2)>60 min).

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Primary Citation of related structures