GSQASS segment from the Nucleoprotein of SARS-CoV-2, residues 179-184

Experimental Data Snapshot

  • Resolution: 1.30 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.249 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Inhibition of amyloid formation of the Nucleoprotein of SARS-CoV-2.

Tayeb-Fligelman, E.Cheng, X.Tai, C.Bowler, J.T.Griner, S.Sawaya, M.R.Seidler, P.M.Jiang, Y.X.Lu, J.Rosenberg, G.M.Salwinski, L.Abskharon, R.Zee, C.T.Hou, K.Li, Y.Boyer, D.R.Murray, K.A.Falcon, G.Anderson, D.H.Cascio, D.Saelices, L.Damoiseaux, R.Guo, F.Eisenberg, D.S.

(2021) Biorxiv 

  • DOI: https://doi.org/10.1101/2021.03.05.434000
  • Primary Citation of Related Structures:  
    7LTU, 7LUX, 7LUZ, 7LV2

  • PubMed Abstract: 

    The SARS-CoV-2 Nucleoprotein (NCAP) functions in RNA packaging during viral replication and assembly. Computational analysis of its amino acid sequence reveals a central low-complexity domain (LCD) having sequence features akin to LCDs in other proteins known to function in liquid-liquid phase separation. Here we show that in the presence of viral RNA, NCAP, and also its LCD segment alone, form amyloid-like fibrils when undergoing liquid-liquid phase separation. Within the LCD we identified three 6-residue segments that drive amyloid fibril formation. We determined atomic structures for fibrils formed by each of the three identified segments. These structures informed our design of peptide inhibitors of NCAP fibril formation and liquid-liquid phase separation, suggesting a therapeutic route for Covid-19.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleoprotein GSQASS6Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Find proteins for P0DTC9 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC9 
Go to UniProtKB:  P0DTC9
Entity Groups  
UniProt GroupP0DTC9
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.30 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.249 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 4.77α = 90
b = 13.6β = 90
c = 42.44γ = 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
Department of Energy (DOE, United States)United StatesDE-FC02-02ER63421
National Science Foundation (NSF, United States)United StatesMCB 1616265
National Institutes of Health/National Institute on Aging (NIH/NIA)United StatesR01 AG048120

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-17
    Type: Initial release
  • Version 1.1: 2021-03-24
    Changes: Database references
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references
  • Version 1.3: 2024-04-03
    Changes: Refinement description