1JFW

HOMONUCLEAR AND HETERONUCLEAR 1H-13C NUCLEAR MAGNETIC RESONANCE ASSIGNMENT AND STRUCTURAL CHARACTERIZATION OF A HIV-1 TAT PROTEIN


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 11 
  • Selection Criteria: BACK CALCULATED DATA AGREE WITH EXPERIMEN TAL NOESY SPECTRUM, STRUCTURES WITH ACCEPTABLE COVALENT GEOMETRY,STRUCTURES WITH FAVORABLE NON-BOND ENERGY,STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS,STRUCTURES WITH THE LOWEST ENERGY, TARGET FUNCTION 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

1H-13C nuclear magnetic resonance assignment and structural characterization of HIV-1 Tat protein.

Peloponese Jr., J.M.Gregoire, C.Opi, S.Esquieu, D.Sturgis, J.Lebrun, E.Meurs, E.Collette, Y.Olive, D.Aubertin, A.M.Witvrow, M.Pannecouque, C.De Clercq, E.Bailly, C.Lebreton, J.Loret, E.P.

(2000) C.R.Acad.Sci.III 323: 883-894

  • Primary Citation of Related Structures:  1FKU

  • PubMed Abstract: 
  • Tat is a viral protein essential for activation of the HIV genes and plays an important role in the HIV-induced immunodeficiency. We chemically synthesized a Tat protein (86 residues) with its six glycines C alpha labelled with 13C. This synthetic pr ...

    Tat is a viral protein essential for activation of the HIV genes and plays an important role in the HIV-induced immunodeficiency. We chemically synthesized a Tat protein (86 residues) with its six glycines C alpha labelled with 13C. This synthetic protein has the full Tat activity. Heteronuclear nuclear magnetic resonance (NMR) spectra and NOE back-calculation made possible the sequential assignment of the 86 spin systems. Consequently, 915 NMR restraints were identified and 272 of them turned out to be long range ([i-j] > 4), providing structural information on the whole Tat protein. The poor spectral dispersion of Tat NMR spectra does not allow an accurate structure to be determined as for other proteins studied by 2D NMR. Nevertheless, we were able to determine the folding for Tat protein at a 1-mM protein concentration in a 100 mM, pH 4.5 phosphate buffer. The two main Tat functional regions, the basic region and the cysteine-rich region, are well exposed to solvent while a part of the N-terminal region and the C-terminal region constitute the core of Tat Bru. The basic region adopts an extended structure while the cysteine-rich region is made up of two loops. Resolution of this structure was determinant to develop a drug design approach against Tat. The chemical synthesis of the drugs allowed the specific binding and the inhibition of Tat to be verified.


    Organizational Affiliation

    Laboratoire d'ingéniérie des systèmes macromoléculaires, Institut de biologie structurale et microbiologie, Marseilles, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TAT PROTEIN
A
86Human immunodeficiency virus type 1 group M subtype BGene Names: tat
Find proteins for P04610 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P04610
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 11 
  • Selection Criteria: BACK CALCULATED DATA AGREE WITH EXPERIMEN TAL NOESY SPECTRUM, STRUCTURES WITH ACCEPTABLE COVALENT GEOMETRY,STRUCTURES WITH FAVORABLE NON-BOND ENERGY,STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS,STRUCTURES WITH THE LOWEST ENERGY, TARGET FUNCTION 
  • Olderado: 1JFW Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-08-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance