3R66

Crystal structure of human ISG15 in complex with NS1 N-terminal region from influenza virus B, Northeast Structural Genomics Consortium Target IDs HX6481, HR2873, and OR2

• PDB DOI: https://doi.org/10.2210/pdb3R66/pdb

• Classification: viral protein/antiviral protein
• Organism(s): Influenza B virus (B/Lee/1940), Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-03-21 Released: 2011-06-08 
• Deposition Author(s): Guan, R., Ma, L.C., Krug, R.M., Montelione, G.T., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.265 
• R-Value Work: 0.214 
• R-Value Observed: 0.216 

Starting Models: experimental

Literature

The Structure of the complex of ISG15 and Influenza B virus NS1 Protein: implications for the mechanism of SN1-mediated inhibition of ISG15 conjugation

Guan, R., Ma, L.C., Leonard, P.G., Brendan, A.R., Sridharan, H., Zhao, C., Krug, R.M., Montelione, G.T.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 62.47 kDa 
• Atom Count: 4,009 
• Modelled Residue Count: 494 
• Deposited Residue Count: 554 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Non-structural protein 1	A, B	113	Influenza B virus (B/Lee/1940)	Mutation(s): 0  Gene Names: NS
UniProt
Find proteins for P03502 (Influenza B virus (strain B/Lee/1940)) Explore P03502  Go to UniProtKB:  P03502

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Ubiquitin-like protein ISG15	C, D	164	Homo sapiens	Mutation(s): 0  Gene Names: ISG15, G1P2, UCRP
UniProt & NIH Common Fund Data Resources
Find proteins for P05161 (Homo sapiens) Explore P05161  Go to UniProtKB:  P05161
PHAROS:  P05161 GTEx:  ENSG00000187608

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSD	C, D	L-PEPTIDE LINKING	C3 H7 N O4 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.265 
• R-Value Work: 0.214 
• R-Value Observed: 0.216 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 39.009	α = 70.59
b = 56.142	β = 84.24
c = 74.02	γ = 83.91

Software Package:

Software Name	Purpose
MAR345	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-06-08 
Deposition Author(s): Guan, R., Ma, L.C., Krug, R.M., Montelione, G.T., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2011-06-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2014-11-12
  Changes: Non-polymer description
• Version 1.3: 2017-11-08
  Changes: Refinement description
• Version 1.4: 2018-01-24
  Changes: Refinement description
• Version 1.5: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.6: 2024-11-20
  Changes: Structure summary