Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

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: 24.47 kDa 
• Atom Count: 1635 
• Modelled Residue Count: 193 
• Deposited Residue Count: 216 
• Unique protein chains: 1

1UTU

Crystal structure of novel protein EMSY truncate

• PDB DOI: 10.2210/pdb1UTU/pdb

• Classification: CHROMATIN REGULATOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-12-10 Released: 2005-10-13 
• Deposition Author(s): Chavali, G.B., Basu, B.P., Doherty, A.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.272 
• R-Value Work: 0.207 
• R-Value Observed: 0.207 

Literature

Binding of Emsy to Hp1Beta: Implications for Recruitment of Hp1Beta and Bs69.

Ekblad, C.M., Chavali, G.B., Basu, B.P., Freund, S.M., Veprintsev, D., Hughes-Davies, L., Kouzarides, T., Doherty, A.J., Itzhaki, L.S.

(2005) EMBO Rep 6: 675

• PubMed: 15947784 
• DOI: 10.1038/sj.embor.7400415
• Primary Citation of Related Structures:  
  1UTU


• PubMed Abstract: 
  

EMSY is a large nuclear protein that binds to the transactivation domain of BRCA2. EMSY contains an approximately 100-residue segment at the amino terminus called the ENT (EMSY N-terminal) domain. Plant proteins containing ENT domains also contain members of the royal family of chromatin-remodelling domains. It has been proposed that EMSY may have a role in chromatin-related processes. This is supported by the observation that a number of chromatin-regulator proteins, including HP1beta and BS69, bind directly to EMSY by means of a conserved motif adjacent to the ENT domain. Here, we report the crystal structure of residues 1-108 of EMSY at 2.0 A resolution. The structure contains both the ENT domain and the HP1beta/BS69-binding motif. This binding motif forms an extended peptide-like conformation that adopts distinct orientations in each subunit of the dimer. Biophysical and nuclear magnetic resonance analyses show that the main complex formed by EMSY and the chromoshadow domain of HP1 (HP1-CSD) consists of one EMSY dimer sandwiched between two HP1-CSD dimers. The HP1beta-binding motif is necessary and sufficient for EMSY to bind to the chromoshadow domain of HP1beta.

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Organizational Affiliation: 

MRC Cancer Cell Unit, Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 2XZ, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
EMSY	A, B	108	Homo sapiens	Mutation(s): 0  Gene Names: EMSY, C11orf30, GL002
UniProt & NIH Common Fund Data Resources
Find proteins for Q7Z589 (Homo sapiens) Explore Q7Z589  Go to UniProtKB:  Q7Z589
PHAROS:  Q7Z589

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.272 
• R-Value Work: 0.207 
• R-Value Observed: 0.207 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.178	α = 90
b = 32.642	β = 92.51
c = 51.607	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-12-10 
• Released Date: 2005-10-13 
Deposition Author(s): Chavali, G.B., Basu, B.P., Doherty, A.J.

Revision History  

• Version 1.0: 2005-10-13
  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: 2017-07-05
  Changes: Data collection