Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 41.63 kDa 
• Atom Count: 2718 
• Modelled Residue Count: 334 
• Deposited Residue Count: 350 
• Unique protein chains: 1

1OHU

Structure of Caenorhabditis elegans CED-9

• DOI: 10.2210/pdb1OHU/pdb

• Classification: APOPTOSIS
• Organism(s): Caenorhabditis elegans
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2003-05-31 Released: 2003-08-14 
• Deposition Author(s): Jeong, J.-S., Ha, N.-C., Oh, B.-H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.03 Å
• R-Value Free: 0.248 
• R-Value Work: 0.212 
• R-Value Observed: 0.212 

Literature

Unique Structural Features of a Bcl-2 Family Protein Ced-9 and Biophysical Characterization of Ced-9/Egl-1 Interactions

Woo, J.-S., Jung, J.-S., Ha, N.-C., Shin, J., Kim, K.-H., Lee, W., Oh, B.-H.

(2003) Cell Death Differ 10: 1310

• PubMed: 12894216 
• DOI: 10.1038/sj.cdd.4401303
• Primary Citation of Related Structures:  
  1OHU


• PubMed Abstract: 
  

The interactions between B-cell lymphoma 2 (BCL-2) family members are known to be mediated through the binding of the BH3 domain of a proapoptotic member to the BH3-binding groove of an antiapoptotic member. We determined the crystal structure of antiapoptotic CED-9, which reveals a unique C-terminal helix altering the common BH3-binding region. A coexpression system to produce CED-9 in complex with proapoptotic EGL-1 enabled us to show that the binding of EGL-1 to CED-9 is extremely stable, raising the melting temperature (T(M)) of CED-9 by 25 degrees C, and that the binding surface of CED-9 extends beyond the BH3-binding region and reaches the BH4 domain. Consistently, the T(M) and a 1H-15N correlation NMR spectrum of CED-9 in complex with EGL-1 are drastically different from those of CED-9 in complex with the EGL-1 BH3 peptide. The data suggest that the recognition between other BCL-2 family members may also involve much wider protein surfaces than is previously thought.

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Organizational Affiliation: 

Department of Life Science, Center for Biomolecular Recognition and Division of Molecular and Life Science, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Korea.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
APOPTOSIS REGULATOR CED-9	A, B	175	Caenorhabditis elegans	Mutation(s): 3  Gene Names: ced-9, T07C4.8
Find proteins for P41958 (Caenorhabditis elegans) Explore P41958  Go to UniProtKB:  P41958

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.03 Å
• R-Value Free: 0.248 
• R-Value Work: 0.212 
• R-Value Observed: 0.212 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.79	α = 90
b = 92.05	β = 99.78
c = 47.64	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-05-31 
• Released Date: 2003-08-14 
Deposition Author(s): Jeong, J.-S., Ha, N.-C., Oh, B.-H.

Revision History  

• Version 1.0: 2003-08-14
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance