1AQ5

HIGH-RESOLUTION SOLUTION NMR STRUCTURE OF THE TRIMERIC COILED-COIL DOMAIN OF CHICKEN CARTILAGE MATRIX PROTEIN, 20 STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb1AQ5/pdb
• BMRB: 4054

• Classification: COILED-COIL
• Organism(s): Gallus gallus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1997-08-07 Released: 1998-02-11 
• Deposition Author(s): Dames, S.A., Wiltscheck, R., Kammerer, R.A., Engel, J., Alexandrescu, A.T.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST ENERGY AND LEAST RESTRAINT VIOLATIONS 

Literature

NMR structure of a parallel homotrimeric coiled coil.

Dames, S.A., Kammerer, R.A., Wiltscheck, R., Engel, J., Alexandrescu, A.T.

(1998) Nat Struct Biol 5: 687-691

• PubMed: 9699631 
• DOI: https://doi.org/10.1038/90444
• Primary Citation of Related Structures:  
  1AQ5


• PubMed Abstract: 
  

  The solution structure of the oligomerization domain of cartilage matrix protein (also known as matrilin-1) has been determined by heteronuclear NMR spectroscopy. The domain folds into a parallel, disulfide-linked, three-stranded, alpha-helical coiled coil, spanning five heptad repeats in the amino acid sequence. The sequence of the first two heptad repeats shows some deviations from the consensus of hydrophobic and hydrophilic residue preferences. While the corresponding region of the coiled coil has a higher intrinsic flexibility, backbone alpha-helix and superhelix parameters are consistent with a regular coiled coil structure.

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Organizational Affiliation: 

Department of Structural Biology, Biozentrum, University of Basel, Switzerland.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.18 kDa 
• Atom Count: 1,125 
• Modelled Residue Count: 141 
• Deposited Residue Count: 141 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CARTILAGE MATRIX PROTEIN	A, B, C	47	Gallus gallus	Mutation(s): 0  Gene Names: CMP
UniProt
Find proteins for P05099 (Gallus gallus) Explore P05099  Go to UniProtKB:  P05099

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST ENERGY AND LEAST RESTRAINT VIOLATIONS 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-02-11 
Deposition Author(s): Dames, S.A., Wiltscheck, R., Kammerer, R.A., Engel, J., Alexandrescu, A.T.

Revision History  

• Version 1.0: 1998-02-11
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-01-13
  Changes: Other, Structure summary
• Version 1.4: 2024-11-06
  Changes: Data collection, Database references, Structure summary