4YXP

The structure of the folded domain of the signature multifunctional protein ICP27 from herpes simplex virus-1 reveals an intertwined dimer.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structure of the folded domain from the signature multifunctional protein ICP27 from herpes simplex virus-1 reveals an intertwined dimer.

Tunnicliffe, R.B.Schacht, M.Levy, C.Jowitt, T.A.Sandri-Goldin, R.M.Golovanov, A.P.

(2015) Sci Rep 5: 11234-11234

  • DOI: 10.1038/srep11234
  • Primary Citation of Related Structures:  
    4YXP

  • PubMed Abstract: 
  • Herpesviruses cause life-long infections by evading the host immune system and establishing latent infections. All mammalian herpesviruses express an essential multifunctional protein that is typified by ICP27 encoded by Herpes Simplex Virus 1. The o ...

    Herpesviruses cause life-long infections by evading the host immune system and establishing latent infections. All mammalian herpesviruses express an essential multifunctional protein that is typified by ICP27 encoded by Herpes Simplex Virus 1. The only region that is conserved among the diverse members of the ICP27 family is a predicted globular domain that has been termed the ICP27 homology domain. Here we present the first crystal structure of the ICP27 homology domain, solved to 1.9 Å resolution. The protein is a homo-dimer, adopting a novel intertwined fold with one CHCC zinc-binding site per monomer. The dimerization, which was independently confirmed by SEC-MALS and AUC, is stabilized by an extensive network of intermolecular contacts, and a domain-swap involving the two N-terminal helices and C-terminal tails. Each monomer contains a lid motif that can clamp the C-terminal tail of its dimeric binding partner against its globular core, without forming any distinct secondary structure elements. The binding interface was probed with point mutations, none of which had a noticeable effect on dimer formation; however deletion of the C-terminal tail region prevented dimer formation in vivo. The structure provides a template for future biochemical studies and modelling of ICP27 homologs from other herpesviruses.


    Organizational Affiliation

    Faculty of Life Sciences, The University of Manchester, Manchester, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
mRNA export factorAB275Human alphaherpesvirus 1 strain 17Mutation(s): 0 
Gene Names: UL54
Find proteins for P10238 (Human herpesvirus 1 (strain 17))
Explore P10238 
Go to UniProtKB:  P10238
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.33α = 90
b = 133.62β = 90
c = 44.97γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of HealthUnited StatesAI107803

Revision History 

  • Version 1.0: 2015-06-17
    Type: Initial release
  • Version 1.1: 2015-06-24
    Changes: Database references