1D4B | pdb_00001d4b

CIDE-N DOMAIN OF HUMAN CIDE-B

• PDB DOI: https://doi.org/10.2210/pdb1D4B/pdb
• BMRB: 4574

• Classification: APOPTOSIS
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-10-02 Released: 1999-12-17 
• Deposition Author(s): Lugovskoy, A., Zhou, P., Chou, J., McCarty, J., Li, P., Wagner, G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 15 
• Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS,STRUCTURES WITH THE LOWEST ENERGY 

Literature

Solution structure of the CIDE-N domain of CIDE-B and a model for CIDE-N/CIDE-N interactions in the DNA fragmentation pathway of apoptosis.

Lugovskoy, A.A., Zhou, P., Chou, J.J., McCarty, J.S., Li, P., Wagner, G.

(1999) Cell 99: 747-755

• PubMed: 10619428 
• DOI: https://doi.org/10.1016/s0092-8674(00)81672-4
• Primary Citation Related Structures: 
  1D4B


• PubMed Abstract: 
  

  Apoptotic DNA fragmentation and chromatin condensation are mediated by the caspase-activated DFF40/ CAD nuclease, which is chaperoned and inhibited by DFF45/ICAD. CIDE proteins share a homologous regulatory CIDE-N domain with DFF40/CAD and DFF45/ ICAD. Here we report the solution structure of CIDE-N of human CIDE-B. We show that the CIDE-N of CIDE-B interacts with CIDE-N domains of both DFF40 and DFF45. The binding epitopes are similar and map to a highly charged bipolar surface region of CIDE-B. Furthermore, we demonstrate that the CIDE-N of CIDE-B regulates enzymatic activity of the DFF40/ DFF45 complex in vitro. Based on these results and mutagenesis data, we propose a model for the CIDE-N/ CIDE-N complex and discuss the role of this novel bipolar interaction in mediating downstream events of apoptosis.

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Organizational Affiliation: 
• Committee on Higher Degrees in Biophysics, Harvard University, Cambridge, Massachusetts 02138, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 13.75 kDa 
• Atom Count: 966 
• Modeled Residue Count: 122 
• Deposited Residue Count: 122 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HUMAN CELL DEATH-INDUCING EFFECTOR B	A	122	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UHD4 (Homo sapiens) Explore Q9UHD4  Go to UniProtKB:  Q9UHD4
PHAROS:  Q9UHD4

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 15 
• Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS,STRUCTURES WITH THE LOWEST ENERGY 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-12-17 
Deposition Author(s): Lugovskoy, A., Zhou, P., Chou, J., McCarty, J., Li, P., Wagner, G.

Revision History  

• Version 1.0: 1999-12-17
  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: 2022-02-16
  Changes: Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection