1AHR

CALMODULIN MUTANT WITH A TWO RESIDUE DELETION IN THE CENTRAL HELIX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.211 
  • R-Value Observed: 0.211 

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This is version 1.2 of the entry. See complete history


Literature

The structure of a calmodulin mutant with a deletion in the central helix: implications for molecular recognition and protein binding.

Tabernero, L.Taylor, D.A.Chandross, R.J.VanBerkum, M.F.Means, A.R.Quiocho, F.A.Sack, J.S.

(1997) Structure 5: 613-622

  • DOI: 10.1016/s0969-2126(97)00217-7
  • Primary Citation of Related Structures:  
    1AHR

  • PubMed Abstract: 
  • Calmodulin (CaM) is the major calcium-dependent regulator of a large variety of important intracellular processes in eukaryotes. The structure of CaM consists of two globular calcium-binding domains joined by a central 28-residue alpha helix. This linker ...

    Calmodulin (CaM) is the major calcium-dependent regulator of a large variety of important intracellular processes in eukaryotes. The structure of CaM consists of two globular calcium-binding domains joined by a central 28-residue alpha helix. This linker helix has been hypothesized to act as a flexible tether and is crucial for the binding and activation of numerous target proteins. Although the way in which alterations of the central helix modulate the molecular recognition mechanism is not known exactly, the relative orientation of the globular domains seems to be of great importance. The structural analysis of central helix mutants may contribute to a better understanding of how changes in the conformation of CaM effect its function.


    Organizational Affiliation

    Department of Macromolecular Crystallography Bristol-Myers Squibb Pharmaceutical Research Institute Princeton, NJ 08543-4000, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CALMODULIN A146Gallus gallusMutation(s): 0 
Gene Names: CALMCAMRCJMB04_24e7
Find proteins for P62149 (Gallus gallus)
Explore P62149 
Go to UniProtKB:  P62149
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.211 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 27.09α = 90
b = 55.51β = 90
c = 100.89γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
UCSDdata reduction
ROCKSdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance