Biological Assembly 1  

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

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 37.48 kDa 
• Atom Count: 3061 
• Modelled Residue Count: 321 
• Deposited Residue Count: 327 
• Unique protein chains: 2

3L51

Crystal Structure of the Mouse Condensin Hinge Domain

• PDB DOI: 10.2210/pdb3L51/pdb

• Classification: CELL CYCLE
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-12-21 Released: 2010-02-16 
• Deposition Author(s): Griese, J.J., Hopfner, K.-P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.51 Å
• R-Value Free: 0.173 
• R-Value Work: 0.143 
• R-Value Observed: 0.146 

Literature

Structure and DNA binding activity of the mouse condensin hinge domain highlight common and diverse features of SMC proteins

Griese, J.J., Witte, G., Hopfner, K.-P.

(2010) Nucleic Acids Res 38: 3454-3465

• PubMed: 20139420 
• DOI: 10.1093/nar/gkq038
• Primary Citation of Related Structures:  
  3L51


• PubMed Abstract: 
  

Structural Maintenance of Chromosomes (SMC) proteins are vital for a wide range of processes including chromosome structure and dynamics, gene regulation and DNA repair. Eukaryotes have three SMC complexes, consisting of heterodimeric pairs of six different SMC proteins along with several specific regulatory subunits. In addition to their other functions, all three SMC complexes play distinct roles in DNA repair. Cohesin (SMC1-SMC3) is involved in DNA double-strand break repair, condensin (SMC2-SMC4) participates in single-strand break (SSB) repair, and the SMC5-SMC6 complex functions in various DNA repair pathways. SMC proteins consist of N- and C-terminal domains that fold back onto each other to create an ATPase 'head' domain, connected to a central 'hinge' domain via long coiled-coils. The hinge domain mediates dimerization of SMC proteins and binds DNA, but it is not clear to what purpose this activity serves. We studied the structure and function of the condensin hinge domain from mouse. While the SMC hinge domain structure is largely conserved from prokaryotes to eukaryotes, its function seems to have diversified throughout the course of evolution. The condensin hinge domain preferentially binds single-stranded DNA. We propose that this activity plays a role in the SSB repair function of the condensin complex.

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Organizational Affiliation: 

Department of Biochemistry, Gene Center, Center for Integrated Protein Sciences and Munich Center for Advanced Photonics, Ludwig-Maximilians University Munich, Feodor-Lynen-Str 25, D-81377 Munich, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Structural maintenance of chromosomes protein 2	A	161	Mus musculus	Mutation(s): 0  Gene Names: SMC2 (amino acids 506-666), Smc2, Cape, Fin16, Smc2l1
UniProt
Find proteins for Q8CG48 (Mus musculus) Explore Q8CG48  Go to UniProtKB:  Q8CG48

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Structural maintenance of chromosomes protein 4	B	166	Mus musculus	Mutation(s): 0  Gene Names: SMC4 (amino acids 595-752), Smc4, Capc, Smc4l1
UniProt
Find proteins for Q8CG47 (Mus musculus) Explore Q8CG47  Go to UniProtKB:  Q8CG47

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A], D [auth A], E [auth A], F [auth A], G [auth B], H [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.51 Å
• R-Value Free: 0.173 
• R-Value Work: 0.143 
• R-Value Observed: 0.146 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 33.455	α = 90
b = 96.741	β = 92.84
c = 54.537	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
SHARP	phasing
DM	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-12-21 
• Released Date: 2010-02-16 
Deposition Author(s): Griese, J.J., Hopfner, K.-P.

Revision History  

• Version 1.0: 2010-02-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance