1KCY

NMR solution structure of apo calbindin D9k (F36G + P43M mutant)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 22 
  • Selection Criteria: The full ensemble was ordered by lowest residual constraint violations, then the top 22 with favorable covalent geometries and AMBER energies were selected 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The EF-hand domain: a globally cooperative structural unit.

Nelson, M.R.Thulin, E.Fagan, P.A.Forsen, S.Chazin, W.J.

(2002) Protein Sci. 11: 198-205

  • DOI: 10.1110/ps.33302

  • PubMed Abstract: 
  • EF-hand Ca(2+)-binding proteins participate in both modulation of Ca(2+) signals and direct transduction of the ionic signal into downstream biochemical events. The range of biochemical functions of these proteins is correlated with differences in th ...

    EF-hand Ca(2+)-binding proteins participate in both modulation of Ca(2+) signals and direct transduction of the ionic signal into downstream biochemical events. The range of biochemical functions of these proteins is correlated with differences in the way in which they respond to the binding of Ca(2+). The EF-hand domains of calbindin D(9k) and calmodulin are homologous, yet they respond to the binding of calcium ions in a drastically different manner. A series of comparative analyses of their structures enabled the development of hypotheses about which residues in these proteins control the calcium-induced changes in conformation. To test our understanding of the relationship between protein sequence and structure, we specifically designed the F36G mutation of the EF-hand protein calbindin D(9k) to alter the packing of helices I and II in the apoprotein. The three-dimensional structure of apo F36G was determined in solution by nuclear magnetic resonance spectroscopy and showed that the design was successful. Surprisingly, significant structural perturbations also were found to extend far from the site of mutation. The observation of such long-range effects provides clear evidence that four-helix EF-hand domains should be treated as a single globally cooperative unit. A hypothetical mechanism for how the long-range effects are transmitted is described. Our results support the concept of energetic and structural coupling of the key residues that are crucial for a protein's fold and function.


    Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, La Jolla, California 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
calbindin D9k
A
75Bos taurusMutation(s): 2 
Gene Names: S100G (CALB3, S100D)
Find proteins for P02633 (Bos taurus)
Go to Gene View: S100G
Go to UniProtKB:  P02633
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 22 
  • Selection Criteria: The full ensemble was ordered by lowest residual constraint violations, then the top 22 with favorable covalent geometries and AMBER energies were selected 
  • Olderado: 1KCY Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-11-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance