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 

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This is version 1.4 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

  • DOI: https://doi.org/10.1016/s0764-4469(00)01228-2
  • Primary Citation of Related Structures:  
    1JFW

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TAT PROTEIN86N/AMutation(s): 0 
UniProt
Find proteins for P04610 (Human immunodeficiency virus type 1 group M subtype B (isolate BRU/LAI))
Explore P04610 
Go to UniProtKB:  P04610
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04610
Sequence Annotations
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  • Reference Sequence
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 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-08-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection