1ESX

1H, 15N AND 13C STRUCTURE OF THE HIV-1 REGULATORY PROTEIN VPR : COMPARISON WITH THE N-AND C-TERMINAL DOMAIN STRUCTURE, (1-51)VPR AND (52-96)VPR


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR structure of the HIV-1 regulatory protein Vpr in H2O/trifluoroethanol. Comparison with the Vpr N-terminal (1-51) and C-terminal (52-96) domains.

Wecker, K.Morellet, N.Bouaziz, S.Roques, B.P.

(2002) Eur.J.Biochem. 269: 3779-3788


  • PubMed Abstract: 
  • The human immunodeficiency virus type 1, HIV-1, genome encodes a highly conserved regulatory gene product, Vpr (96 amino acids), which is incorporated into virions in quantities equivalent to those of the viral Gag protein. In infected cells, Vpr is ...

    The human immunodeficiency virus type 1, HIV-1, genome encodes a highly conserved regulatory gene product, Vpr (96 amino acids), which is incorporated into virions in quantities equivalent to those of the viral Gag protein. In infected cells, Vpr is believed to function during the early stages of HIV-1 replication (such as transcription of the proviral genome and migration of preintegration nuclear complex), blocks cells in G2 phase and triggers apoptosis. Vpr also plays a critical role in long-term AIDS disease by inducing viral infection in nondividing cells such as monocytes and macrophages. To gain deeper insight of the structure-function relationship of Vpr, the intact protein (residues 1-96) was synthesized. Its three-dimensional structure was analysed using circular dichroism and two-dimensional 1H- and 15N-NMR and refined by restrained molecular dynamics. In addition, 15N relaxation parameters (T1, T2) and heteronuclear 1H-15N NOEs were measured. The structure of the protein is characterized by a well-defined gamma turn(14-16)-alpha helix(17-33)-turn(34-36), followed by a alpha helix(40-48)-loop(49-54)-alpha helix(55-83) domain and ends with a very flexible C-terminal sequence. This structural determination of the whole intact Vpr molecule provide insights into the biological role played by this protein during the virus life cycle, as such amphipathic helices are believed to be involved in protein-lipid bilayers, protein-protein and/or protein-nucleic acid interactions.


    Organizational Affiliation

    D├ępartement de Pharmacochimie Mol├ęculaire et Structurale, INSERM U266 CNRS UMR 8600, UFR des Sciences Pharmaceutiques et Biologiques, Paris, France. wecker@pasteur.fr




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VPR PROTEIN
A
96Human immunodeficiency virus type 1 group M subtype B (strain 89.6)Gene Names: vpr
Find proteins for Q73369 (Human immunodeficiency virus type 1 group M subtype B (strain 89.6))
Go to UniProtKB:  Q73369
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-04-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance