4UVJ | pdb_00004uvj

Cohesin subunit Scc3 from yeast, 674-1072

• PDB DOI: https://doi.org/10.2210/pdb4UVJ/pdb

• Classification: CELL CYCLE
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-08-06 Released: 2014-08-20 
• Deposition Author(s): Roig, M.B., Nasmyth, K., Lowe, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.247 (Depositor), 0.193 (DCC) 
• R-Value Work: 
  0.186 (Depositor), 0.189 (DCC) 
• R-Value Observed: 
  0.189 (Depositor) 

Literature

Structure and Function of Cohesins Scc3/Sa Regulatory Subunit

Roig, M.B., Lowe, J., Chan, K.L., Beckouet, F., Metson, J., Nasmyth, K.

(2014) FEBS Lett 588: 3692

• PubMed: 25171859 
• DOI: https://doi.org/10.1016/j.febslet.2014.08.015
• Primary Citation Related Structures: 
  4UVJ, 4UVK


• PubMed Abstract: 
  

  Sister chromatid cohesion involves entrapment of sister DNAs by a cohesin ring created through association of a kleisin subunit (Scc1) with ATPase heads of Smc1/Smc3 heterodimers. Cohesin's association with chromatin involves subunits recruited by Scc1: Wapl, Pds5, and Scc3/SA, in addition to Scc2/4 loading complex. Unlike Pds5, Wapl, and Scc2/4, Scc3s are encoded by all eukaryotic genomes. Here, a crystal structure of Scc3 reveals a hook-shaped protein composed of tandem α helices. Its N-terminal domain contains a conserved and essential surface (CES) present even in organisms lacking Pds5, Wapl, and Scc2/4, while its C-terminal domain binds a section of the kleisin Scc1. Scc3 turns over in G2/M while maintaining cohesin's association with chromosomes and it promotes de-acetylation of Smc3 upon Scc1 cleavage.

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Organizational Affiliation: 
• Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom.
MRC Laboratory of Molecular Biology, Structural Studies Division, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom. Electronic address: [e-mail].
Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom. Electronic address: [e-mail].

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 95.14 kDa 
• Atom Count: 6,403 
• Modeled Residue Count: 728 
• Deposited Residue Count: 812 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
COHESIN SUBUNIT SCC3	A, B	406	Saccharomyces cerevisiae	Mutation(s): 0
UniProt
Find proteins for P40541 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P40541  Go to UniProtKB:  P40541

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.247 (Depositor), 0.193 (DCC) 
• R-Value Work:  0.186 (Depositor), 0.189 (DCC) 
• R-Value Observed: 0.189 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.787	α = 80.68
b = 58.022	β = 82
c = 80.179	γ = 63.99

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-08-20 
Deposition Author(s): Roig, M.B., Nasmyth, K., Lowe, J.

Revision History  

• Version 1.0: 2014-08-20
  Type: Initial release
  
• Version 1.1: 2014-09-10
  Changes: Database references
• Version 1.2: 2014-10-08
  Changes: Database references
• Version 1.3: 2024-05-08
  Changes: Data collection, Database references, Other, Refinement description