2L50

Solution structure of apo S100A16


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 350 
  • Conformers Submitted: 30 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural characterization of human S100A16, a low-affinity calcium binder.

Babini, E.Bertini, I.Borsi, V.Calderone, V.Hu, X.Luchinat, C.Parigi, G.

(2011) J.Biol.Inorg.Chem. 16: 243-256

  • DOI: 10.1007/s00775-010-0721-3
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The homodimeric structure of human S100A16 in the apo state has been obtained both in the solid state and in solution, resulting in good agreement between the structures with the exception of two loop regions. The homodimeric solution structure of hu ...

    The homodimeric structure of human S100A16 in the apo state has been obtained both in the solid state and in solution, resulting in good agreement between the structures with the exception of two loop regions. The homodimeric solution structure of human S100A16 was also calculated in the calcium(II)-bound form. Differently from most S100 proteins, the conformational rearrangement upon calcium binding is minor. This characteristic is likely to be related to the weak binding affinity of the protein for the calcium(II) ions. In turn, this is ascribed to the lack of the glutamate residue at the end of the S100-specific N-domain binding site, which in most S100 proteins provides two important side chain oxygen atoms as calcium(II) ligands. Furthermore, the presence of hydrophobic interactions stronger than for other S100 proteins, present in the closed form of S100A16 between the third and fourth helices, likely make the closed structure of the second EF-hand particularly stable, so even upon calcium(II) binding such a conformation is not disrupted.


    Organizational Affiliation

    Department of Food Science, University of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein S100-A16
A, B
102Homo sapiensMutation(s): 0 
Gene Names: S100A16 (S100F)
Find proteins for Q96FQ6 (Homo sapiens)
Go to Gene View: S100A16
Go to UniProtKB:  Q96FQ6
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 350 
  • Conformers Submitted: 30 
  • Selection Criteria: target function 
  • Olderado: 2L50 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance