1B4C

SOLUTION STRUCTURE OF RAT APO-S100B USING DIPOLAR COUPLINGS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 21 
  • Conformers Submitted: 21 
  • Selection Criteria: SEE MAIN REFERENCE 

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This is version 1.2 of the entry. See complete history

Literature

The use of dipolar couplings for determining the solution structure of rat apo-S100B(betabeta).

Drohat, A.C.Tjandra, N.Baldisseri, D.M.Weber, D.J.

(1999) Protein Sci. 8: 800-809

  • DOI: 10.1110/ps.8.4.800

  • PubMed Abstract: 
  • The relative orientations of adjacent structural elements without many well-defined NOE contacts between them are typically poorly defined in NMR structures. For apo-S100B(betabeta) and the structurally homologous protein calcyclin, the solution stru ...

    The relative orientations of adjacent structural elements without many well-defined NOE contacts between them are typically poorly defined in NMR structures. For apo-S100B(betabeta) and the structurally homologous protein calcyclin, the solution structures determined by conventional NMR exhibited considerable differences and made it impossible to draw unambiguous conclusions regarding the Ca2+-induced conformational change required for target protein binding. The structure of rat apo-S100B(betabeta) was recalculated using a large number of constraints derived from dipolar couplings that were measured in a dilute liquid crystalline phase. The dipolar couplings orient bond vectors relative to a single-axis system, and thereby remove much of the uncertainty in NOE-based structures. The structure of apo-S100B(betabeta) indicates a minimal change in the first, pseudo-EF-hand Ca2+ binding site, but a large reorientation of helix 3 in the second, classical EF-hand upon Ca2+ binding.


    Related Citations: 
    • ==1==H, ==13==C and ==15==N NMR Assignments and Solution Secondary Structure of Rat Apo-S100Beta
      Amburgey, J.C.,Abildgaard, F.,Starich, M.R.,Shah, S.,Hilt, D.C.,Weber, D.J.
      (1995) J.Biomol.NMR 6: 171
    • Solution Structure of Rat Apo-S100B(beta beta) as Determined by NMR Spectroscopy
      Drohat, A.C.,Amburgey, J.C.,Abildgaard, F.,Starich, M.R.,Baldisseri, D.M.,Weber, D.J.
      (1996) Biochemistry 35: 11577


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore 21201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (S-100 PROTEIN, BETA CHAIN)
A, B
92Rattus norvegicusGene Names: S100b
Find proteins for P04631 (Rattus norvegicus)
Go to UniProtKB:  P04631
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 21 
  • Conformers Submitted: 21 
  • Selection Criteria: SEE MAIN REFERENCE 
  • Olderado: 1B4C Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-12-30
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance