1Z8R

2A cysteine proteinase from human coxsackievirus B4 (strain JVB / Benschoten / New York / 51)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 17 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and dynamics of coxsackievirus B4 2A proteinase, an enyzme involved in the etiology of heart disease.

Baxter, N.J.Roetzer, A.Liebig, H.D.Sedelnikova, S.E.Hounslow, A.M.Skern, T.Waltho, J.P.

(2006) J Virol 80: 1451-1462

  • DOI: 10.1128/JVI.80.3.1451-1462.2006
  • Primary Citation of Related Structures:  
    1Z8R

  • PubMed Abstract: 
  • The 2A proteinases (2A(pro)) from the picornavirus family are multifunctional cysteine proteinases that perform essential roles during viral replication, involving viral polyprotein self-processing and shutting down host cell protein synthesis through cleavage of the eukaryotic initiation factor 4G (eIF4G) proteins ...

    The 2A proteinases (2A(pro)) from the picornavirus family are multifunctional cysteine proteinases that perform essential roles during viral replication, involving viral polyprotein self-processing and shutting down host cell protein synthesis through cleavage of the eukaryotic initiation factor 4G (eIF4G) proteins. Coxsackievirus B4 (CVB4) 2A(pro) also cleaves heart muscle dystrophin, leading to cytoskeletal dysfunction and the symptoms of human acquired dilated cardiomyopathy. We have determined the solution structure of CVB4 2A(pro) (extending in an N-terminal direction to include the C-terminal eight residues of CVB4 VP1, which completes the VP1-2A(pro) substrate region). In terms of overall fold, it is similar to the crystal structure of the mature human rhinovirus serotype 2 (HRV2) 2A(pro), but the relatively low level (40%) of sequence identity leads to a substantially different surface. We show that differences in the cI-to-eI2 loop between HRV2 and CVB4 2A(pro) translate to differences in the mechanism of eIF4GI recognition. Additionally, the nuclear magnetic resonance relaxation properties of CVB4 2A(pro), particularly of residues G1 to S7, F64 to S67, and P107 to G111, reveal that the substrate region is exchanging in and out of a conformation in which it occupies the active site with association and dissociation rates in the range of 100 to 1,000 s(-1). This exchange influences the conformation of the active site and points to a mechanism for how self-processing can occur efficiently while product inhibition is avoided.


    Organizational Affiliation

    Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Coxsackievirus B4 polyproteinA166Coxsackievirus B4Mutation(s): 1 
Gene Names: picornain 2A
EC: 3.4.22.29 (PDB Primary Data), 3.6.1.15 (UniProt), 3.4.22.28 (UniProt), 2.7.7.48 (UniProt)
UniProt
Find proteins for P08292 (Coxsackievirus B4 (strain JVB / Benschoten / New York/51))
Explore P08292 
Go to UniProtKB:  P08292
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 17 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1Z8R Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-02-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance