1F2R | pdb_00001f2r

NMR STRUCTURE OF THE HETERODIMERIC COMPLEX BETWEEN CAD DOMAINS OF CAD AND ICAD

• PDB DOI: https://doi.org/10.2210/pdb1F2R/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-05-29 Released: 2000-06-08 
• Deposition Author(s): Otomo, T., Sakahira, H., Uegaki, K., Nagata, S., Yamazaki, T.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Structure of the heterodimeric complex between CAD domains of CAD and ICAD.

Otomo, T., Sakahira, H., Uegaki, K., Nagata, S., Yamazaki, T.

(2000) Nat Struct Biol 7: 658-662

• PubMed: 10932250 
• DOI: https://doi.org/10.1038/77957
• Primary Citation Related Structures: 
  1F2R


• PubMed Abstract: 
  

  We present here the structure of the complex between the CAD domain of caspase activated deoxyribonuclease (CAD) and the CAD domain of its inhibitor (ICAD), determined by nuclear magnetic resonance spectroscopy. The two domains adopt a very similar fold, which consists of an alpha-helix and a beta-sheet, and are aligned side by side in the complex. Notably, the positive charges on the strand beta2 at one end of the beta-sheet of CAD and negative charges around the opposite end of the beta-sheet of ICAD are paired in the complex. Point mutations of the charged amino acids at this interface, on either CAD or ICAD, prevented formation of the functional CAD-ICAD complex. This implies that the interaction between the CAD domains of CAD and ICAD is an essential step in the correct folding of CAD in the complex.

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Organizational Affiliation: 
• Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan.

Biological Assembly 1  

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.

Macromolecule Content 

• Total Structure Weight: 20.69 kDa 
• Atom Count: 1,442 
• Modeled Residue Count: 187 
• Deposited Residue Count: 187 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CASPASE-ACTIVATED DNASE	A [auth C]	87	Mus musculus	Mutation(s): 0  EC: 3
UniProt & NIH Common Fund Data Resources
Find proteins for O54788 (Mus musculus) Explore O54788  Go to UniProtKB:  O54788
IMPC:  MGI:1196287

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
INHIBITOR OF CASPASE-ACTIVATED DNASE	B [auth I]	100	Mus musculus	Mutation(s): 0
UniProt
Find proteins for O54786 (Mus musculus) Explore O54786  Go to UniProtKB:  O54786

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-06-08 
Deposition Author(s): Otomo, T., Sakahira, H., Uegaki, K., Nagata, S., Yamazaki, T.

Revision History  

• Version 1.0: 2000-06-08
  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