1MWN

Solution NMR structure of S100B bound to the high-affinity target peptide TRTK-12


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.2 of the entry. See complete history


Literature

Solution NMR structure of S100B bound to the high-affinity target peptide TRTK-12

Inman, K.G.Yang, R.Rustandi, R.R.Miller, K.E.Baldisseri, D.M.Weber, D.J.

(2002) J Mol Biol 324: 1003-1014

  • DOI: 10.1016/s0022-2836(02)01152-x
  • Primary Citation of Related Structures:  
    1MWN

  • PubMed Abstract: 
  • The solution NMR structure is reported for Ca(2+)-loaded S100B bound to a 12-residue peptide, TRTK-12, from the actin capping protein CapZ (alpha1 or alpha2 subunit, residues 265-276: TRTKIDWNKILS). This peptide was discovered by Dimlich and co-workers by screening a bacteriophage random peptide display library, and it matches exactly the consensus S100B binding sequence ((K/R)(L/I)XWXXIL) ...

    The solution NMR structure is reported for Ca(2+)-loaded S100B bound to a 12-residue peptide, TRTK-12, from the actin capping protein CapZ (alpha1 or alpha2 subunit, residues 265-276: TRTKIDWNKILS). This peptide was discovered by Dimlich and co-workers by screening a bacteriophage random peptide display library, and it matches exactly the consensus S100B binding sequence ((K/R)(L/I)XWXXIL). As with other S100B target proteins, a calcium-dependent conformational change in S100B is required for TRTK-12 binding. The TRTK-12 peptide is an amphipathic helix (residues W7 to S12) in the S100B-TRTK complex, and helix 4 of S100B is extended by three or four residues upon peptide binding. However, helical TRTK-12 in the S100B-peptide complex is uniquely oriented when compared to the three-dimensional structures of other S100-peptide complexes. The three-dimensional structure of the S100B-TRTK peptide complex illustrates that residues in the S100B binding consensus sequence (K4, I5, W7, I10, L11) are all involved in the S100B-peptide interface, which can explain its orientation in the S100B binding pocket and its relatively high binding affinity. A comparison of the S100B-TRTK peptide structure to the structures of apo- and Ca(2+)-bound S100B illustrates that the binding site of TRTK-12 is buried in apo-S100B, but is exposed in Ca(2+)-bound S100B as necessary to bind the TRTK-12 peptide.


    Related Citations: 
    • Structure of the negative regulatory domain of p53 bound to S100B(betabeta)
      Rustandi, R.R., Baldisseri, D.M., Weber, D.J.
      (2000) Nat Struct Biol 7: 570
    • Solution structure of calcium-bound rat S100B(betabeta) as determined by nuclear magnetic resonance spectroscopy
      Drohat, A.C., Baldisseri, D.M., Rustandi, R.R., Weber, D.J.
      (1998) Biochemistry 37: 2729
    • Solution structure of rat apo-S100B(betabeta) 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, School of Medicine, University of Maryland, 108 N. Greene St., Baltimore, MD 21201, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
S-100 protein, beta chainA, B92Rattus norvegicusMutation(s): 0 
Gene Names: S100b
UniProt
Find proteins for P04631 (Rattus norvegicus)
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Go to UniProtKB:  P04631
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
F-actin capping protein alpha-1 subunitC [auth X], D [auth Y]12N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P52907 (Homo sapiens)
Explore P52907 
Go to UniProtKB:  P52907
PHAROS:  P52907
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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1MWN Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-18
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance