3SFG image
Entry Detail
PDB ID:
3SFG
Keywords:
TRANSFERASE
Title:
crystal structure of murine norovirus RNA dependent RNA polymerase in complex with 2thiouridine(2TU)
Biological Source:
Source Organism:
Murine norovirus 1
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2011-06-13
Release Date:
2012-05-09
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.21 Å
R-Value Free:
0.25
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 1 2 1
3SFG validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:RNA polymerase
Chain IDs:A, B, C
Chain Length:517
Number of Molecules:3
Biological Source:Murine norovirus 1
UniProt ID:Q80J95 Pfam ID:PF00680 EC:2.7.7.48
Ligand Molecules
2TU
GOL
MG
SO4
Primary Citation
Crystal structures of murine norovirus-1 RNA-dependent RNA polymerase in complex with 2-thiouridine or ribavirin.
Virology 426 143 151 (2012)
PMID: 22341781 DOI: 10.1016/j.virol.2012.01.016

Abstact

Murine norovirus-1 (MNV-1) shares many features with human norovirus (HuNoV) and both are classified within the norovirus genus of Caliciviridae family. MNV-1 is used as the surrogate for HuNoV research since it is the only form that can be grown in cell culture. HuNoV and MNV-1 RNA dependent RNA polymerase (RdRp) proteins with the sequence identity of 59% show essentially identical conformations. Here we report the first structural evidence of 2-thiouridine (2TU) or ribavirin binding to MNV-1 RdRp, based on the crystal structures determined at 2.2Å and 2.5Å resolutions, respectively. Cellular and biochemical studies revealed stronger inhibitory effect of 2TU on the replication of MNV-1 in RAW 264.7 cells, compared to that of ribavirin. Our complex structures highlight the key interactions involved in recognition of the nucleoside analogs which block the active site of the viral RNA polymerase.

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Protein

Chemical

Disease

Primary Citation of related structures
3NAH
3NAI
3QID
3SFU