1B03

SOLUTION STRUCTURE OF THE ANTIBODY-BOUND HIV-1IIIB V3 PEPTIDE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 35 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 

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This is version 1.3 of the entry. See complete history


Literature

A cis proline turn linking two beta-hairpin strands in the solution structure of an antibody-bound HIV-1IIIB V3 peptide.

Tugarinov, V.Zvi, A.Levy, R.Anglister, J.

(1999) Nat Struct Biol 6: 331-335

  • DOI: 10.1038/7567
  • Primary Citation of Related Structures:  
    1B03

  • PubMed Abstract: 
  • The refined solution structure of an 18-residue HIV-1IIIB V3 peptide in complex with the Fv fragment of an anti-gp120 antibody reveals an unexpected type VI beta-turn comprising residues RGPG at the center of a beta-hairpin. The central glycine and proline of this turn are linked by a cis peptide bond ...

    The refined solution structure of an 18-residue HIV-1IIIB V3 peptide in complex with the Fv fragment of an anti-gp120 antibody reveals an unexpected type VI beta-turn comprising residues RGPG at the center of a beta-hairpin. The central glycine and proline of this turn are linked by a cis peptide bond. The residues of the turn interact extensively with the antibody Fv. 15N[1H] NOE measurements show that the backbone of the peptide, including the central QRGPGR loop, is well ordered in the complex. The solution structure is significantly different from the X-ray structures of HIV-1MN V3 peptides bound to anti-peptide antibodies. These differences could be due to a two-residue (QR) insertion preceding the GPGR sequence in the HIV-1IIIB strain, and the much longer peptide epitope immobilized by the anti-gp120 antibody.


    Related Citations: 
    • Conformation of the Principal Neutralizing Determinant of Human Immunodeficiency Virus Type 1 in Complex with an Anti-GP120 Virus Neutralizing Antibody Studied by Two-dimensional Nuclear Magnetic Resonance Difference Spectroscopy.
      Zvi, A., Feigelson, D.J., Hayek, Y., Anglister, J.
      (1997) Biochemistry 36: 8619

    Organizational Affiliation

    Department of Structural Biology, The Weizmann Institute of Science, Rehovot, Israel.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (P1053 PEPTIDE)A18N/AMutation(s): 0 
UniProt
Find proteins for Q79428 (Human immunodeficiency virus 1)
Explore Q79428 
Go to UniProtKB:  Q79428
Entity Groups  
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UniProt GroupQ79428
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 35 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-11-25
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations