1CMG | pdb_00001cmg

NMR SOLUTION STRUCTURE OF CALCIUM-LOADED CALMODULIN CARBOXY-TERMINAL DOMAIN

• PDB DOI: https://doi.org/10.2210/pdb1CMG/pdb

• Classification: CALCIUM-BINDING PROTEIN
• Organism(s): Bos taurus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1995-07-19 Released: 1995-12-07 
• Deposition Author(s): Evenas, J., Finn, B.E., Drakenberg, T., Waltho, J.P., Thulin, E., Forsen, S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 20 

Literature

Calcium-induced structural changes and domain autonomy in calmodulin.

Finn, B.E., Evenas, J., Drakenberg, T., Waltho, J.P., Thulin, E., Forsen, S.

(1995) Nat Struct Biol 2: 777-783

• PubMed: 7552749 
• DOI: https://doi.org/10.1038/nsb0995-777
• Primary Citation Related Structures: 
  1CMF, 1CMG


• PubMed Abstract: 
  

  We have determined the solution structures of the apo and (Ca2+)2 forms of the carboxy-terminal domain of calmodulin using multidimensional heteronuclear nuclear magnetic resonance spectroscopy. The results show that both forms adopt well-defined structures with essentially equal secondary structure. A comparison of the structures of the two forms shows that Ca2+ binding causes major rearrangements of the secondary structure elements with changes in inter-residue distances of up to 15 A and exposure of the hydrophobic interior of the four-helix bundle. Comparisons with previously determined high-resolution X-ray structures and models of calmodulin indicate that this domain is structurally autonomous.

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Organizational Affiliation: 
• Department of Physical Chemistry, Lund University, Sweden.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 8.42 kDa 
• Atom Count: 586 
• Modeled Residue Count: 73 
• Deposited Residue Count: 73 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CALMODULIN (VERTEBRATE)	A	73	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P62157 (Bos taurus) Explore P62157  Go to UniProtKB:  P62157

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 20 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-12-07 
Deposition Author(s): Evenas, J., Finn, B.E., Drakenberg, T., Waltho, J.P., Thulin, E., Forsen, S.

Revision History  

• Version 1.0: 1995-12-07
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-16
  Changes: Database references, Derived calculations, Other
• Version 1.4: 2024-05-22
  Changes: Data collection