1EMN | pdb_00001emn

NMR STUDY OF A PAIR OF FIBRILLIN CA2+ BINDING EPIDERMAL GROWTH FACTOR-LIKE DOMAINS, MINIMIZED AVERAGE STRUCTURE

• PDB DOI: https://doi.org/10.2210/pdb1EMN/pdb

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


• Deposited: 1996-08-05 Released: 1996-12-23 
• Deposition Author(s): Downing, A.K., Campbell, I.D., Handford, P.A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 1 
• Selection Criteria: F(NOE) < 165 KJ MOL-1 TORSION ANGLE CONSTRAINTS VIOLATED BY > 3 DEGREES 

Literature

Solution structure of a pair of calcium-binding epidermal growth factor-like domains: implications for the Marfan syndrome and other genetic disorders.

Downing, A.K., Knott, V., Werner, J.M., Cardy, C.M., Campbell, I.D., Handford, P.A.

(1996) Cell 85: 597-605

• PubMed: 8653794 
• DOI: https://doi.org/10.1016/s0092-8674(00)81259-3
• Primary Citation Related Structures: 
  1EMN, 1EMO


• PubMed Abstract: 
  

  The nuclear magnetic resonance structure of a covalently linked pair of calcium-binding (cb) epidermal growth factor-like (EGF) domains from human fibrillin-1, the protein defective in the Marfan syndrome, is described. The two domains are in a rigid, rod-like arrangement, stabilized by interdomain calcium binding and hydrophobic interactions. We propose a model for the arrangement of fibrillin monomers in microfibrils that reconciles structural and antibody binding data, and we describe a set of disease-causing mutations that provide the first clues to the specificity of cbEFG interactions. The residues involved in stabilizing the domain linkage are highly conserved in fibrillin, fibulin, thrombomodulin, and the low density lipoprotein receptor. We propose that the relative orientation of tandem cbEGF domains in these proteins is similar, but that in others, including Notch, pairs adopt a completely different conformation.

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Organizational Affiliation: 
• Department of Biochemistry University of Oxford, United Kingdom.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 8.83 kDa 
• Atom Count: 600 
• Modeled Residue Count: 82 
• Deposited Residue Count: 82 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FIBRILLIN	A	82	Homo sapiens	Mutation(s): 0  Gene Names: FBN1
UniProt & NIH Common Fund Data Resources
Find proteins for P35555 (Homo sapiens) Explore P35555  Go to UniProtKB:  P35555
PHAROS:  P35555 GTEx:  ENSG00000166147

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 1 
• Selection Criteria: F(NOE) < 165 KJ MOL-1 TORSION ANGLE CONSTRAINTS VIOLATED BY > 3 DEGREES 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-12-23 
Deposition Author(s): Downing, A.K., Campbell, I.D., Handford, P.A.

Revision History  

• Version 1.0: 1996-12-23
  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: 2021-10-27
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-09
  Changes: Data collection, Structure summary