4U4H

Crystal Structure of HSV-1 UL21 N-terminal Domain

• PDB DOI: https://doi.org/10.2210/pdb4U4H/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Human alphaherpesvirus 1 strain 17
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-07-23 Released: 2015-01-07 
• Deposition Author(s): Metrick, C.M., Heldwein, E.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.221 
• R-Value Work: 0.166 
• R-Value Observed: 0.168 

Literature

The Unusual Fold of Herpes Simplex Virus 1 UL21, a Multifunctional Tegument Protein.

Metrick, C.M., Chadha, P., Heldwein, E.E.

(2015) J Virol 89: 2979-2984

• PubMed: 25540382 
• DOI: https://doi.org/10.1128/JVI.03516-14
• Primary Citation of Related Structures:  
  4U4H


• PubMed Abstract: 
  

  UL21 is a conserved protein in the tegument of alphaherpesviruses and has multiple important albeit poorly understood functions in viral replication and pathogenesis. To provide a roadmap for exploration of the multiple roles of UL21, we determined the crystal structure of its conserved N-terminal domain from herpes simplex virus 1 to 2.0-Å resolution, which revealed a novel sail-like protein fold. Evolutionarily conserved surface patches highlight residues of potential importance for future targeting by mutagenesis.

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Organizational Affiliation: 

Department of Molecular Biology and Microbiology and Graduate Program in Biochemistry, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.18 kDa 
• Atom Count: 1,645 
• Modelled Residue Count: 198 
• Deposited Residue Count: 209 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tegument protein UL21	A	209	Human alphaherpesvirus 1 strain 17	Mutation(s): 0  Gene Names: UL21
UniProt
Find proteins for P10205 (Human herpesvirus 1 (strain 17)) Explore P10205  Go to UniProtKB:  P10205

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.221 
• R-Value Work: 0.166 
• R-Value Observed: 0.168 
• Space Group: P 6₃ 2 2
• Diffraction Data: https://doi.org/10.15785/SBGRID/140
• Diffraction Data: https://doi.org/10.15785/SBGRID/141

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 108.346	α = 90
b = 108.346	β = 90
c = 65.236	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data reduction
SHARP	phasing
PDB_EXTRACT	data extraction
PHENIX	refinement
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-01-07 
Deposition Author(s): Metrick, C.M., Heldwein, E.E.

Revision History  

• Version 1.0: 2015-01-07
  Type: Initial release
  
• Version 1.1: 2015-01-14
  Changes: Database references
• Version 1.2: 2015-02-18
  Changes: Database references
• Version 1.3: 2023-12-27
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description, Source and taxonomy