Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 16.39 kDa 
• Atom Count: 1,119 
• Modelled Residue Count: 120 
• Deposited Residue Count: 136 
• Unique protein chains: 1

 1E0B

Chromo shadow domain from fission yeast swi6 protein.

• PDB DOI: 10.2210/pdb1E0B/pdb

• Classification: CHROMATIN-BINDING
• Organism(s): Schizosaccharomyces pombe
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2000-03-16 Released: 2000-05-12 
• Deposition Author(s): Cowieson, N.P., Partridge, J.F., Allshire, R.C., Mclaughlin, P.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.259 
• R-Value Work: 0.226 
• R-Value Observed: 0.226 

Literature

Dimerisation of Chromo Shadow Domain and Distinctions from the Chromodomain as Revealed by Structural Analysis

Cowieson, N.P., Partridge, J.F., Allshire, R.C., Mclaughlin, P.J.

(2000) Curr Biol 10: 517

• PubMed: 10801440 
• DOI: 10.1016/s0960-9822(00)00467-x
• Primary Citation of Related Structures:  
  1E0B


• PubMed Abstract: 
  

Proteins such as HP1, found in fruit flies and mammals, and Swi6, its fission yeast homologue, carry a chromodomain (CD) and a chromo shadow domain (CSD). These proteins are required to form functional transcriptionally silent centromeric chromatin, and their mutation leads to chromosome segregation defects. CSDs have only been found in tandem in proteins containing the related CD. Most HP1-interacting proteins have been found to associate through the CSD and many of these ligands contain a conserved pentapeptide motif.

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Organizational Affiliation: 

Swann Building, King's Buildings, Institute of Cell and Molecular Biology, The University of Edinburgh, Edinburgh, EH9 3JR, Scotland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SWI6 PROTEIN	A, B	68	Schizosaccharomyces pombe	Mutation(s): 0
UniProt
Find proteins for P40381 (Schizosaccharomyces pombe (strain 972 / ATCC 24843)) Explore P40381  Go to UniProtKB:  P40381

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1PG	C [auth A]	2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL C11 H24 O6 SLNYBUIEAMRFSZ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.259 
• R-Value Work: 0.226 
• R-Value Observed: 0.226 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.89	α = 90
b = 59.89	β = 90
c = 91.23	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-05-12 
Deposition Author(s): Cowieson, N.P., Partridge, J.F., Allshire, R.C., Mclaughlin, P.J.

Revision History  

• Version 1.0: 2000-05-12
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-04-03
  Changes: Data collection, Experimental preparation, Other