Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 21.11 kDa 
• Atom Count: 1464 
• Residue Count: 186 
• Unique protein chains: 1

2L0P

Solution structure of human apo-S100A1 protein by NMR spectroscopy

• DOI: 10.2210/pdb2L0P/pdb

• Classification: Calcium binding protein
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-07-12 Released: 2011-04-20 
• Deposition Author(s): Nowakowski, M., Jaremko, L., Jaremko, M., Bierzynski, A., Zhukov, I., Ejchart, A.

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Experimental Data Snapshot

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

Literature

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

• PubMed: 21296671 
• DOI: 10.1016/j.jsb.2011.01.011
• Primary Citation of Related Structures:  
  2L0P


• 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
S100 calcium binding protein A1	A, B	94	Homo sapiens	Mutation(s): 0  Gene Names: S100A1, RP1-178F15.1-003, hCG_15470, S100A
Find proteins for P23297 (Homo sapiens) Explore P23297  Go to UniProtKB:  P23297
NIH Common Fund Data Resources
PHAROS:  P23297 GTEx:  ENSG00000160678

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 130 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2L0P Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-07-12 
• Released Date: 2011-04-20 
Deposition Author(s): Nowakowski, M., Jaremko, L., Jaremko, M., Bierzynski, A., Zhukov, I., Ejchart, A.

Revision History 

• 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