4BWY

P4 PROTEIN FROM BACTERIOPHAGE PHI8 (R32)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.295 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Tracking in Atomic Detail the Functional Specializations in Viral Reca Helicases that Occur During Evolution.

El Omari, K.Meier, C.Kainov, D.Sutton, G.Grimes, J.M.Poranen, M.M.Bamford, D.H.Tuma, R.Stuart, D.I.Mancini, E.J.

(2013) Nucleic Acids Res. 41: 9396

  • DOI: 10.1093/nar/gkt713
  • Primary Citation of Related Structures:  
  • Also Cited By: 5MUW, 5MUV

  • PubMed Abstract: 
  • Many complex viruses package their genomes into empty protein shells and bacteriophages of the Cystoviridae family provide some of the simplest models for this. The cystoviral hexameric NTPase, P4, uses chemical energy to translocate single-stranded ...

    Many complex viruses package their genomes into empty protein shells and bacteriophages of the Cystoviridae family provide some of the simplest models for this. The cystoviral hexameric NTPase, P4, uses chemical energy to translocate single-stranded RNA genomic precursors into the procapsid. We previously dissected the mechanism of RNA translocation for one such phage, 12, and have now investigated three further highly divergent, cystoviral P4 NTPases (from 6, 8 and 13). High-resolution crystal structures of the set of P4s allow a structure-based phylogenetic analysis, which reveals that these proteins form a distinct subfamily of the RecA-type ATPases. Although the proteins share a common catalytic core, they have different specificities and control mechanisms, which we map onto divergent N- and C-terminal domains. Thus, the RNA loading and tight coupling of NTPase activity with RNA translocation in 8 P4 is due to a remarkable C-terminal structure, which wraps right around the outside of the molecule to insert into the central hole where RNA binds to coupled L1 and L2 loops, whereas in 12 P4, a C-terminal residue, serine 282, forms a specific hydrogen bond to the N7 of purines ring to confer purine specificity for the 12 enzyme.


    Organizational Affiliation

    Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Headington, Oxford OX3 7BN, UK, Institute for Molecular Medicine Finland (FIMM), University of Helsinki, 00290 Helsinki, Finland, Department of Environmental Research, Siauliai University, Vilniaus gatvÄ— 88, 76285 Siauliai, Lithuania, Diamond Light Source Limited, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK, Department of Biosciences, University of Helsinki, Biocenter 2, PO Box 56, 00014 Helsinki, Finland, Institute of Biotechnology, University of Helsinki, Biocenter 2, PO Box 56, 00014 Helsinki, Finland and Astbury Centre for Structural Molecular Biology and School of Cellular and Molecular Biology, University of Leeds, Leeds LS2 9JT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
P4
A, B, C, D, E, F, G, H, I, J, K, L
321Pseudomonas phage phi8Mutation(s): 0 
Gene Names: 4
Find proteins for Q9MC14 (Pseudomonas phage phi8)
Go to UniProtKB:  Q9MC14
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.295 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 197.725α = 90.00
b = 197.725β = 90.00
c = 562.576γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
BUSTERrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-11-13
    Type: Database references