Crystal structure of BRD4 bromodomain 1 in complex with monoacetylated SARS-CoV-2 E

Experimental Data Snapshot

  • Resolution: 2.68 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.222 

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This is version 1.3 of the entry. See complete history


Binding of the SARS-CoV-2 envelope E protein to human BRD4 is essential for infection.

Vann, K.R.Acharya, A.Jang, S.M.Lachance, C.Zandian, M.Holt, T.A.Smith, A.L.Pandey, K.Durden, D.L.El-Gamal, D.Cote, J.Byrareddy, S.N.Kutateladze, T.G.

(2022) Structure 30: 1224

  • DOI: https://doi.org/10.1016/j.str.2022.05.020
  • Primary Citation of Related Structures:  
    7TUQ, 7TV0

  • PubMed Abstract: 

    Emerging new variants of SARS-CoV-2 and inevitable acquired drug resistance call for the continued search of new pharmacological targets to fight the potentially fatal infection. Here, we describe the mechanisms by which the E protein of SARS-CoV-2 hijacks the human transcriptional regulator BRD4. We found that SARS-CoV-2 E is acetylated in vivo and co-immunoprecipitates with BRD4 in human cells. Bromodomains (BDs) of BRD4 bind to the C-terminus of the E protein, acetylated by human acetyltransferase p300, whereas the ET domain of BRD4 recognizes the unmodified motif of the E protein. Inhibitors of BRD4 BDs, JQ1 or OTX015, decrease SARS-CoV-2 infectivity in lung bronchial epithelial cells, indicating that the acetyllysine binding function of BDs is necessary for the virus fitness and that BRD4 represents a potential anti-COVID-19 target. Our findings provide insight into molecular mechanisms that contribute to SARS-CoV-2 pathogenesis and shed light on a new strategy to block SARS-CoV-2 infection.

  • Organizational Affiliation

    Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bromodomain-containing protein 4
A, B
140Homo sapiensMutation(s): 0 
Gene Names: BRD4HUNK1
UniProt & NIH Common Fund Data Resources
Find proteins for O60885 (Homo sapiens)
Explore O60885 
Go to UniProtKB:  O60885
PHAROS:  O60885
GTEx:  ENSG00000141867 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60885
Sequence Annotations
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Envelope small membrane protein9Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Find proteins for P0DTC4 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC4 
Go to UniProtKB:  P0DTC4
Entity Groups  
UniProt GroupP0DTC4
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on ALY
Experimental Data & Validation

Experimental Data

  • Resolution: 2.68 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.222 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.463α = 90
b = 91.392β = 90
c = 100.268γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-07-06
    Type: Initial release
  • Version 1.1: 2022-09-14
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description
  • Version 1.3: 2023-11-15
    Changes: Data collection