1CFF

NMR SOLUTION STRUCTURE OF A COMPLEX OF CALMODULIN WITH A BINDING PEPTIDE OF THE CA2+-PUMP


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 26 
  • Selection Criteria: LOWEST ENERGY 

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This is version 1.5 of the entry. See complete history


Literature

NMR solution structure of a complex of calmodulin with a binding peptide of the Ca2+ pump.

Elshorst, B.Hennig, M.Forsterling, H.Diener, A.Maurer, M.Schulte, P.Schwalbe, H.Griesinger, C.Krebs, J.Schmid, H.Vorherr, T.Carafoli, E.

(1999) Biochemistry 38: 12320-12332

  • DOI: https://doi.org/10.1021/bi9908235
  • Primary Citation of Related Structures:  
    1CFF

  • PubMed Abstract: 

    The three-dimensional structure of the complex between calmodulin (CaM) and a peptide corresponding to the N-terminal portion of the CaM-binding domain of the plasma membrane calcium pump, the peptide C20W, has been solved by heteronuclear three-dimensional nuclear magnetic resonance (NMR) spectroscopy. The structure calculation is based on a total of 1808 intramolecular NOEs and 49 intermolecular NOEs between the peptide C20W and calmodulin from heteronuclear-filtered NOESY spectra and a half-filtered experiment, respectively. Chemical shift differences between free Ca(2+)-saturated CaM and its complex with C20W as well as the structure calculation reveal that C20W binds solely to the C-terminal half of CaM. In addition, comparison of the methyl resonances of the nine assigned methionine residues of free Ca(2+)-saturated CaM with those of the CaM/C20W complex revealed a significant difference between the N-terminal and the C-terminal domain; i.e., resonances in the N-terminal domain of the complex were much more similar to those reported for free CaM in contrast to those in the C-terminal half which were significantly different not only from the resonances of free CaM but also from those reported for the CaM/M13 complex. As a consequence, the global structure of the CaM/C20W complex is unusual, i.e., different from other peptide calmodulin complexes, since we find no indication for a collapsed structure. The fine modulation in the peptide protein interface shows a number of differences to the CaM/M13 complex studied by Ikura et al. [Ikura, M., Clore, G. M., Gronenborn, A. M., Zhu, G., Klee, C. B., and Bax, A. (1992) Science 256, 632-638]. The unusual binding mode to only the C-terminal half of CaM is in agreement with the biochemical observation that the calcium pump can be activated by the C-terminal half of CaM alone [Guerini, D., Krebs, J., and Carafoli, E. (1984) J. Biol. Chem. 259, 15172-15177].


  • Organizational Affiliation

    Institute of Organic Chemistry, University of Frankfurt, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CALMODULIN148Xenopus laevisMutation(s): 0 
UniProt
Find proteins for P0DP33 (Xenopus laevis)
Explore P0DP33 
Go to UniProtKB:  P0DP33
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UniProt GroupP0DP33
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CALCIUM PUMP20Homo sapiensMutation(s): 1 
EC: 7.2.2.10
UniProt & NIH Common Fund Data Resources
Find proteins for P23634 (Homo sapiens)
Explore P23634 
Go to UniProtKB:  P23634
PHAROS:  P23634
GTEx:  ENSG00000058668 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23634
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 26 
  • Selection Criteria: LOWEST ENERGY 

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 1999-09-24
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-03-14
    Changes: Database references, Derived calculations
  • Version 1.4: 2018-08-29
    Changes: Data collection, Derived calculations, Source and taxonomy, Structure summary
  • Version 1.5: 2023-12-27
    Changes: Data collection, Database references, Derived calculations