2MA9

HIV-1 Vif SOCS-box and Elongin BC solution structure


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Insight into the HIV-1 Vif SOCS-box-ElonginBC interaction.

Lu, Z.Bergeron, J.R.Atkinson, R.A.Schaller, T.Veselkov, D.A.Oregioni, A.Yang, Y.Matthews, S.J.Malim, M.H.Sanderson, M.R.

(2013) Open Biol 3: 130100-130100

  • DOI: 10.1098/rsob.130100
  • Primary Citation of Related Structures:  
    2MA9

  • PubMed Abstract: 
  • The HIV-1 viral infectivity factor (Vif) neutralizes cell-encoded antiviral APOBEC3 proteins by recruiting a cellular ElonginB (EloB)/ElonginC (EloC)/Cullin5-containing ubiquitin ligase complex, resulting in APOBEC3 ubiquitination and proteolysis. Th ...

    The HIV-1 viral infectivity factor (Vif) neutralizes cell-encoded antiviral APOBEC3 proteins by recruiting a cellular ElonginB (EloB)/ElonginC (EloC)/Cullin5-containing ubiquitin ligase complex, resulting in APOBEC3 ubiquitination and proteolysis. The suppressors-of-cytokine-signalling-like domain (SOCS-box) of HIV-1 Vif is essential for E3 ligase engagement, and contains a BC box as well as an unusual proline-rich motif. Here, we report the NMR solution structure of the Vif SOCS-ElonginBC (EloBC) complex. In contrast to SOCS-boxes described in other proteins, the HIV-1 Vif SOCS-box contains only one α-helical domain followed by a β-sheet fold. The SOCS-box of Vif binds primarily to EloC by hydrophobic interactions. The functionally essential proline-rich motif mediates a direct but weak interaction with residues 101-104 of EloB, inducing a conformational change from an unstructured state to a structured state. The structure of the complex and biophysical studies provide detailed insight into the function of Vif's proline-rich motif and reveal novel dynamic information on the Vif-EloBC interaction.


    Organizational Affiliation

    Randall Division of Cell and Molecular Biophysics, King's College London, 3rd Floor, New Hunt's House, Guy's Campus, London Bridge, London SE1 1UL, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Virion infectivity factorA36Human immunodeficiency virus type 1 (NEW YORK-5 ISOLATE)Mutation(s): 0 
Gene Names: vif
Find proteins for P12504 (Human immunodeficiency virus type 1 group M subtype B (isolate NY5))
Explore P12504 
Go to UniProtKB:  P12504
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription elongation factor B polypeptide 2B118Homo sapiensMutation(s): 0 
Gene Names: TCEB2ELOB
Find proteins for Q15370 (Homo sapiens)
Explore Q15370 
Go to UniProtKB:  Q15370
NIH Common Fund Data Resources
PHAROS  Q15370
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription elongation factor B polypeptide 1C91Homo sapiensMutation(s): 0 
Gene Names: TCEB1ELOC
Find proteins for Q15369 (Homo sapiens)
Explore Q15369 
Go to UniProtKB:  Q15369
NIH Common Fund Data Resources
PHAROS  Q15369
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MA9 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2016-04-27
    Changes: Structure summary