Macromolecule Content

• Total Structure Weight: 21.43 kDa 
• Atom Count: 1510 
• Residue Count: 187 
• Unique protein chains: 1

1DUJ

SOLUTION STRUCTURE OF THE SPINDLE ASSEMBLY CHECKPOINT PROTEIN HUMAN MAD2

• DOI: 10.2210/pdb1DUJ/pdb
• BMRB: 4775

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


• Deposited: 2000-01-17 Released: 2000-03-08 
• Deposition Author(s): Luo, X., Fang, G., Coldiron, M., Lin, Y., Yu, H.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Structure of the Mad2 spindle assembly checkpoint protein and its interaction with Cdc20.

Luo, X., Fang, G., Coldiron, M., Lin, Y., Yu, H., Kirschner, M.W., Wagner, G.

(2000) Nat Struct Biol 7: 224-229

• PubMed: 10700282 
• DOI: 10.1038/73338
• Primary Citation of Related Structures:  
  1DUJ


• PubMed Abstract: 
  

The checkpoint protein Mad2 inhibits the activity of the anaphase promoting complex by sequestering Cdc20 until all chromosomes are aligned at the metaphase plate. We report the solution structure of human Mad2 and its interaction with Cdc20. Mad2 possesses a novel three-layered alpha/beta fold with three alpha-helices packed between two beta-sheets. Using deletion mutants we identified the minimal Mad2-binding region of human Cdc20 as a 40-residue segment immediately N-terminal to the WD40 repeats. Mutagenesis and NMR titration experiments show that a C-terminal flexible region of Mad2 is required for binding to Cdc20. Mad2 and Cdc20 form a tight 1:1 heterodimeric complex in which the C-terminal segment of Mad2 becomes folded. These results provide the first structural insight into mechanisms of the spindle assembly checkpoint.

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Organizational Affiliation: 

Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SPINDLE ASSEMBLY CHECKPOINT PROTEIN	A	187	Homo sapiens	Mutation(s): 0  Gene Names: MAD2L1, MAD2
Find proteins for Q13257 (Homo sapiens) Explore Q13257  Go to UniProtKB:  Q13257
NIH Common Fund Data Resources
PHAROS:  Q13257 GTEx:  ENSG00000164109

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 
• OLDERADO: 1DUJ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-01-17 
• Released Date: 2000-03-08 
Deposition Author(s): Luo, X., Fang, G., Coldiron, M., Lin, Y., Yu, H.

Revision History 

• Version 1.0: 2000-03-08
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance