Solution structure of human apo-S100A1 protein by NMR spectroscopy

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 130 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Solution NMR structure and dynamics of human apo-S100A1 protein.

Nowakowski, M.Jaremko, L.Jaremko, M.Zhukov, I.Belczyk, A.Bierzynski, A.Ejchart, A.

(2011) J Struct Biol 174: 391-399

  • DOI: https://doi.org/10.1016/j.jsb.2011.01.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    S100A1 belongs to the EF-hand superfamily of calcium binding proteins. It is a representative of the S100 protein family based on amino acid sequence, three-dimensional structure, and biological function as a calcium signal transmitter. It is a homodimer of noncovalently bound subunits. S100A1, like most of other members of the S100 protein family, is a multifunctional, regulatory protein involved in a large variety of biological processes and closely associated with several human diseases. The three-dimensional structure of human apo-(i.e. calcium free)-S100A1 protein was determined by NMR spectroscopy (PDB 2L0P) and its backbone dynamics established by ¹⁵N magnetic relaxation. Comparison of these results with the structure and backbone dynamics previously determined for bovine apo-S100A1 protein modified by disulfide formation with β-mercaptoethanol at Cys 85 revealed that the secondary structure of both these proteins was almost identical, whereas the global structure of the latter was much more mobile than that of human apo-S100 protein. Differences between the structures of human and rat apo-S100A1 are also discussed.

  • Organizational Affiliation

    Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5A, 02-106 Warsaw, Poland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
S100 calcium binding protein A1
A, B
94Homo sapiensMutation(s): 0 
Gene Names: S100A1RP1-178F15.1-003hCG_15470
UniProt & NIH Common Fund Data Resources
Find proteins for P23297 (Homo sapiens)
Explore P23297 
Go to UniProtKB:  P23297
GTEx:  ENSG00000160678 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23297
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 130 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-02-22
    Changes: Other
  • Version 1.3: 2024-05-01
    Changes: Data collection, Database references