3ZIL

Structure of the Wpl1 protein

• PDB DOI:  https://doi.org/10.2210/pdb3ZIL/pdb

• Classification: CELL CYCLE
• Organism(s): Eremothecium gossypii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-01-09 Released: 2013-02-20 
• Deposition Author(s): Chatterjee, A., Zakian, S., Hu, X.-W., Singleton, M.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.01 Å
• R-Value Free: 0.246 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 

Literature

Structural Insights Into Regulation of Cohesion Establishment by Wpl1

Chatterjee, A., Zakian, S., Hu, X.-W., Singleton, M.R.

(2013) EMBO J 32: 677

• PubMed: 23395900 
• DOI: https://doi.org/10.1038/emboj.2013.16
• Primary Citation of Related Structures:  
  3ZIK, 3ZIL


• PubMed Abstract: 
  

Correct segregation of duplicated chromosomes to daughter cells during mitosis requires the action of the cohesin complex. This tripartite ring-shaped molecule is involved in holding replicated sister chromatids together from S phase until anaphase onset. Establishment of stable cohesion involves acetylation of the Smc3 component of cohesin during replication by the Eco1 acetyltransferase. This has been proposed to antagonise the activity of another member of the cohesin complex, Wpl1. Here, we describe the X-ray structure of the conserved Wapl domain, and demonstrate that it binds the ATPase head of the Smc3 protein. We present data that suggest that Wpl1 may be involved in regulating the ATPase activity of cohesin, and that this may be subject to the acetylation state of Smc3. In addition, we present a structure of the Wapl domain bound to a functionally relevant segment of the Smc3 ATPase.

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Organizational Affiliation: 

Macromolecular Structure and Function Laboratory, Cancer Research UK, London Research Institute, London, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 46.14 kDa 
• Atom Count: 3,034 
• Modelled Residue Count: 373 
• Deposited Residue Count: 406 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AAR187CP	A	378	Eremothecium gossypii	Mutation(s): 0
UniProt
Find proteins for Q75E93 (Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056)) Explore Q75E93  Go to UniProtKB:  Q75E93

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
AAL182WP	B	28	Eremothecium gossypii	Mutation(s): 0
UniProt
Find proteins for Q75FB3 (Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056)) Explore Q75FB3  Go to UniProtKB:  Q75FB3

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.01 Å
• R-Value Free: 0.246 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 
• Space Group: I 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 97.402	α = 90
b = 35.207	β = 101.89
c = 117.381	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-02-20 
Deposition Author(s): Chatterjee, A., Zakian, S., Hu, X.-W., Singleton, M.R.

Revision History  

• Version 1.0: 2013-02-20
  Type: Initial release
  
• Version 1.1: 2013-03-27
  Changes: Database references