Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 74.94 kDa 
• Atom Count: 3951 
• Modelled Residue Count: 485 
• Deposited Residue Count: 654 
• Unique protein chains: 1

4XC5

CRYSTAL STRUCTURE OF THE T1L REOVIRUS ATTACHMENT PROTEIN SIGMA1

• DOI: 10.2210/pdb4XC5/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Mammalian orthoreovirus 1 Lang
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-12-17 Released: 2015-04-01 
• Deposition Author(s): Reiss, K., Stehle, T.
• Funding Organization(s): National Institute of Health

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.223 
• R-Value Work: 0.190 
• R-Value Observed: 0.193 

Literature

Structure of Serotype 1 Reovirus Attachment Protein sigma 1 in Complex with Junctional Adhesion Molecule A Reveals a Conserved Serotype-Independent Binding Epitope.

Stettner, E., Dietrich, M.H., Reiss, K., Dermody, T.S., Stehle, T.

(2015) J Virol 89: 6136-6140

• PubMed: 25810543 
• DOI: 10.1128/JVI.00433-15
• Primary Citation of Related Structures:  
  4XC5


• PubMed Abstract: 
  

Mammalian orthoreoviruses use glycans and junctional adhesion molecule A (JAM-A) as attachment receptors. We determined the structure of serotype 1 reovirus attachment protein σ1 alone and in complex with JAM-A. Comparison with the structure of serotype 3 reovirus σ1 bound to JAM-A reveals that both σ1 proteins engage JAM-A with similar affinities and via conserved binding epitopes. Thus, σ1-JAM-A interactions are unlikely to explain the differences in pathogenesis displayed by these reovirus serotypes.

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Organizational Affiliation: 

Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA [e-mail] [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer capsid protein sigma-1	A, B, C	218	Mammalian orthoreovirus 1 Lang	Mutation(s): 0  Gene Names: S1
Find proteins for P04506 (Reovirus type 1 (strain Lang)) Explore P04506  Go to UniProtKB:  P04506

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	G [auth A], H [auth A], L [auth B], M [auth B], N [auth B], R [auth C], S [auth C]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACT	F [auth A], K [auth B], Q [auth C]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
CL	D [auth A], I [auth B], O [auth C]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	E [auth A], J [auth B], P [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.223 
• R-Value Work: 0.190 
• R-Value Observed: 0.193 
• Space Group: I 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.93	α = 90
b = 112.96	β = 90
c = 113.22	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2014-12-17 
• Released Date: 2015-04-01 
Deposition Author(s): Reiss, K., Stehle, T.

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Funding Organization	Location	Grant Number
National Institute of Health	United States	R01 AI076983

Revision History  

• Version 1.0: 2015-04-01
  Type: Initial release
  
• Version 1.1: 2015-04-08
  Changes: Database references
• Version 1.2: 2015-05-13
  Changes: Database references
• Version 1.3: 2016-07-13
  Changes: Data collection