Evolutionary basis of HIV restriction by the antiretroviral TRIMCyp

Experimental Data Snapshot

  • Resolution: 2.60 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.219 

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Conformational Adaptation of Asian Macaque Trimcyp Directs Lineage Specific Antiviral Activity.

Ylinen, L.M.Price, A.J.Rasaiyaah, J.Hue, S.Rose, N.J.Marzetta, F.James, L.C.Towers, G.J.

(2010) PLoS Pathog 6: 1062

  • DOI: https://doi.org/10.1371/journal.ppat.1001062
  • Primary Citation of Related Structures:  
    2X82, 2X83

  • PubMed Abstract: 

    TRIMCyps are anti-retroviral proteins that have arisen independently in New World and Old World primates. All TRIMCyps comprise a CypA domain fused to the tripartite domains of TRIM5alpha but they have distinct lentiviral specificities, conferring HIV-1 restriction in New World owl monkeys and HIV-2 restriction in Old World rhesus macaques. Here we provide evidence that Asian macaque TRIMCyps have acquired changes that switch restriction specificity between different lentiviral lineages, resulting in species-specific alleles that target different viruses. Structural, thermodynamic and viral restriction analysis suggests that a single mutation in the Cyp domain, R69H, occurred early in macaque TRIMCyp evolution, expanding restriction specificity to the lentiviral lineages found in African green monkeys, sooty mangabeys and chimpanzees. Subsequent mutations have enhanced restriction to particular viruses but at the cost of broad specificity. We reveal how specificity is altered by a scaffold mutation, E143K, that modifies surface electrostatics and propagates conformational changes into the active site. Our results suggest that lentiviruses may have been important pathogens in Asian macaques despite the fact that there are no reported lentiviral infections in current macaque populations.

  • Organizational Affiliation

    University College London Medical Research Council Centre for Medical Molecular Virology, London, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
145Human immunodeficiency virus type 2 (ISOLATE D194)Mutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.60 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.219 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.47α = 90
b = 116.77β = 90
c = 129.36γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-09-15
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance