1D7M

COILED-COIL DIMERIZATION DOMAIN FROM CORTEXILLIN I

• PDB DOI: https://doi.org/10.2210/pdb1D7M/pdb

• Classification: CONTRACTILE PROTEIN
• Organism(s): Dictyostelium discoideum
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-10-19 Released: 2000-03-27 
• Deposition Author(s): Burkhard, P., Kammerer, R.A., Steinmetz, M.O., Bourenkov, G.P., Aebi, U.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.249 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 

Literature

The coiled-coil trigger site of the rod domain of cortexillin I unveils a distinct network of interhelical and intrahelical salt bridges.

Burkhard, P., Kammerer, R.A., Steinmetz, M.O., Bourenkov, G.P., Aebi, U.

(2000) Structure 8: 223-230

• PubMed: 10745004 
• DOI: https://doi.org/10.1016/s0969-2126(00)00100-3
• Primary Citation of Related Structures:  
  1D7M


• PubMed Abstract: 
  

  The parallel two-stranded alpha-helical coiled coil is the most frequently encountered subunit-oligomerization motif in proteins. The simplicity and regularity of this motif have made it an attractive system to explore some of the fundamental principles of protein folding and stability and to test the principles of de novo design.

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Organizational Affiliation: 

M.E. Müller Institute for Structural Biology, Biozentrum, University of Basel, Basel, CH-4056, Switzerland. [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)

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.25 kDa 
• Atom Count: 1,715 
• Modelled Residue Count: 202 
• Deposited Residue Count: 202 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CORTEXILLIN I	A, B	101	Dictyostelium discoideum	Mutation(s): 0
UniProt
Find proteins for Q54HG2 (Dictyostelium discoideum) Explore Q54HG2  Go to UniProtKB:  Q54HG2

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.249 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.42	α = 90
b = 128.65	β = 90
c = 91.57	γ = 90

Software Package:

Software Name	Purpose
SHARP	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-03-27 
Deposition Author(s): Burkhard, P., Kammerer, R.A., Steinmetz, M.O., Bourenkov, G.P., Aebi, U.

Revision History  

• Version 1.0: 2000-03-27
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2024-02-07
  Changes: Data collection, Database references