1DSK

NMR SOLUTION STRUCTURE OF VPR59_86, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Solution structure of peptides from HIV-1 Vpr protein that cause membrane permeabilization and growth arrest.

Yao, S.Torres, A.M.Azad, A.A.Macreadie, I.G.Norton, R.S.

(1998) J. Pept. Sci. 4: 426-435

  • DOI: 10.1002/(SICI)1099-1387(199811)4:7<426::AID-PSC161>3.0.CO;2-J
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Vpr, one of the accessory gene products encoded by HIV-1, is a 96-residue protein with a number of functions, including targeting of the viral pre-integration complex to the nucleus and inducing growth arrest of dividing cells. We have characterized ...

    Vpr, one of the accessory gene products encoded by HIV-1, is a 96-residue protein with a number of functions, including targeting of the viral pre-integration complex to the nucleus and inducing growth arrest of dividing cells. We have characterized by 2D NMR the solution conformations of bioactive synthetic peptide fragments of Vpr encompassing a pair of H(F/S)RIG sequence motifs (residues 71-75 and 78-82 of HIV-1 Vpr) that cause cell membrane permeabilization and death in yeast and mammalian cells. Due to limited solubility of the peptides in water, their structures were studied in aqueous trifluoroethanol. Peptide Vpr59-86 (residues 59-86 of Vpr) formed an alpha-helix encompassing residues 60-77, with a kink in the vicinity of residue 62. The first of the repeated sequence motifs (HFRIG) participated in the well-defined alpha-helical domain whereas the second (HSRIG) lay outside the helical domain and formed a reverse turn followed by a less ordered region. On the other hand, peptides Vpr71-82 and Vpr71-96, in which the sequence motifs were located at the N-terminus, were largely unstructured under similar conditions, as judged by their C(alpha)H chemical shifts. Thus, the HFRIG and HSRIG motifs adopt alpha-helical and turn structures, respectively, when preceded by a helical structure, but are largely unstructured in isolation. The implications of these findings for interpretation of the structure-function relationships of synthetic peptides containing these motifs are discussed.


    Related Citations: 
    • A domain of human immunodeficiency virus type 1 Vpr containing repeated H(S/F)RIG amino acid motifs causes cell growth arrest and structural defects.
      Macreadie, I.G.,Castelli, L.A.,Hewish, D.R.,Kirkpatrick, A.,Ward, A.C.,Azad, A.A.
      (1995) Proc. Natl. Acad. Sci. U.S.A. 92: 2770
    • Characterization of a leucine-zipper-like domain in Vpr protein of human immunodeficiency virus type 1.
      Wang, L.,Mukherjee, S.,Narayan, O.,Zhao, L.J.
      (1996) Gene 178: 7


    Organizational Affiliation

    Biomolecular Research Institute, Parkville, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VPR PROTEIN
A
28Human immunodeficiency virus type 1 group M subtype BMutation(s): 0 
Gene Names: vpr
Find proteins for P12520 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P12520
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • Olderado: 1DSK Olderado
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-07-01
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-12-20
    Type: Database references, Derived calculations, Other