2I08

Solvation effect in conformational changes of EF-hand proteins: X-ray structure of Ca2+-saturated double mutant Q41L-K75I of N-domain of calmodulin

• PDB DOI: https://doi.org/10.2210/pdb2I08/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2006-08-10 Released: 2007-08-21 
• Deposition Author(s): Ababou, A., Parkinson, G.N., Desjarlais, J.R., Djordjevic, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.243 
• R-Value Work: 0.239 
• R-Value Observed: 0.239 

Starting Model: experimental

Literature

Solvation effect in conformational changes of EF-hand proteins: X-ray structure of double mutant Q41L-K75I of N-domain of calmodulin

Ababou, A., Parkinson, G.N., Desjarlais, J.R., Djordjevic, S.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.96 kDa 
• Atom Count: 632 
• Modelled Residue Count: 74 
• Deposited Residue Count: 78 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calmodulin	A	78	Homo sapiens	Mutation(s): 5  Gene Names: calm1
UniProt & NIH Common Fund Data Resources
Find proteins for P0DP23 (Homo sapiens) Explore P0DP23  Go to UniProtKB:  P0DP23
PHAROS:  P0DP23 GTEx:  ENSG00000198668

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.243 
• R-Value Work: 0.239 
• R-Value Observed: 0.239 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 38.4	α = 90
b = 38.4	β = 90
c = 81.2	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
CrystalClear	data collection
CrystalClear	data reduction
CrystalClear	data scaling
EPMR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-08-21 
Deposition Author(s): Ababou, A., Parkinson, G.N., Desjarlais, J.R., Djordjevic, S.

Revision History  

• Version 1.0: 2007-08-21
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.2: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.3: 2023-08-30
  Changes: Data collection, Refinement description