1AHR

CALMODULIN MUTANT WITH A TWO RESIDUE DELETION IN THE CENTRAL HELIX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


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


  • 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 li ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CALMODULIN
A
146Gallus gallusGene Names: CALM (CAM)
Find proteins for P62149 (Gallus gallus)
Go to UniProtKB:  P62149
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 27.090α = 90.00
b = 55.510β = 90.00
c = 100.890γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
UCSDdata reduction
X-PLORrefinement
X-PLORmodel building
ROCKSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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