1NYA | pdb_00001nya

NMR SOLUTION STRUCTURE OF CALERYTHRIN, AN EF-HAND CALCIUM-BINDING PROTEIN

• PDB DOI: https://doi.org/10.2210/pdb1NYA/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Saccharopolyspora erythraea
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2003-02-12 Released: 2003-08-05 
• Deposition Author(s): Tossavainen, H., Permi, P., Annila, A., Kilpelainen, I., Drakenberg, T.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 225 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

NMR solution structure of calerythrin, an EF-hand calcium-binding protein from Saccharopolyspora erythraea

Tossavainen, H., Permi, P., Annila, A., Kilpelainen, I., Drakenberg, T.

(2003) Eur J Biochem 270: 2505-2512

• PubMed: 12755706 
• DOI: https://doi.org/10.1046/j.1432-1033.2003.03623.x
• Primary Citation Related Structures: 
  1NYA


• PubMed Abstract: 
  

  The structure of calerythrin, a prokaryotic 20 kDa calcium-binding protein has been determined by solution NMR spectroscopy. Distance, dihedral angle, J coupling, secondary chemical shift, residual dipolar coupling and radius of gyration restraints reveal four EF-hand motifs arranged in a compact globular structure. A tight turn in the middle of the amino acid sequence brings the two halves, each comprising a pair of EF-hands, close together. The structural similarity between calerythrin and the eukaryotic sarcoplasmic calcium-binding proteins is notable.

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Organizational Affiliation: 
• NMR laboratory, Structural Biology and Biophysics, Institute of Biotechnology, University of Helsinki, Finland.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 19.18 kDa 
• Atom Count: 1,346 
• Modeled Residue Count: 176 
• Deposited Residue Count: 176 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calerythrin	A	176	Saccharopolyspora erythraea	Mutation(s): 2
UniProt
Find proteins for P06495 (Saccharopolyspora erythraea) Explore P06495  Go to UniProtKB:  P06495

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A], D [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 225 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-08-05 
Deposition Author(s): Tossavainen, H., Permi, P., Annila, A., Kilpelainen, I., Drakenberg, T.

Revision History  

• Version 1.0: 2003-08-05
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-27
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection