1K7B

NMR Solution Structure of sTva47, the Viral-Binding Domain of Tva


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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Literature

The solution structure of the viral binding domain of Tva, the cellular receptor for subgroup A avian leukosis and sarcoma virus.

Tonelli, M.Peters, R.J.James, T.L.Agard, D.A.

(2001) FEBS Lett 509: 161-168

  • DOI: 10.1016/s0014-5793(01)03086-1
  • Primary Citation of Related Structures:  
    1K7B

  • PubMed Abstract: 
  • The cellular receptor for subgroup A avian leukosis and sarcoma virus (ALSV-A) is Tva, which contains a motif related to repeats in the low density lipoprotein receptor (LDLR) ligand binding repeat (LBr) and which is necessary for viral entry. As obs ...

    The cellular receptor for subgroup A avian leukosis and sarcoma virus (ALSV-A) is Tva, which contains a motif related to repeats in the low density lipoprotein receptor (LDLR) ligand binding repeat (LBr) and which is necessary for viral entry. As observed with LBr repeats of LDLR, the 47 residue LBr domain of Tva (sTva47) requires calcium during oxidative folding to form the correct disulfide bonds, and calcium enhances the structure of correctly oxidized sTva47, as well as its ability to bind the viral envelope protein (Env). However, solution nuclear magnetic resonance studies indicate that, even in the presence of excess calcium, sTva47 exists in an ensemble of conformations. Nonetheless, as reported here, the structure of the predominant sTva47 solution conformer closely resembles that of other LBr repeats, with identical S-S binding topology and octahedral calcium coordination. The location of W48 and other critical residues on the surface suggests a region of the molecule necessary for Env binding and to mediate post-binding events important for ALSV-A cell entry.


    Organizational Affiliation

    The Howard Hughes Medical Institute, University of California, San Francisco 94143, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SUBGROUP A ROUS SARCOMA VIRUS RECEPTOR PG800 AND PG950A47Coturnix coturnixMutation(s): 0 
Find proteins for P98162 (Coturnix japonica)
Explore P98162 
Go to UniProtKB:  P98162
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1K7B Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-12-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-02-05
    Changes: Atomic model, Data collection, Database references, Derived calculations, Other