1PMS

PLECKSTRIN HOMOLOGY DOMAIN OF SON OF SEVENLESS 1 (SOS1) WITH GLYCINE-SERINE ADDED TO THE N-TERMINUS, NMR, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The solution structure of the pleckstrin homology domain of mouse Son-of-sevenless 1 (mSos1).

Koshiba, S.Kigawa, T.Kim, J.H.Shirouzu, M.Bowtell, D.Yokoyama, S.

(1997) J Mol Biol 269: 579-591

  • DOI: 10.1006/jmbi.1997.1041
  • Primary Citation of Related Structures:  
    1PMS

  • PubMed Abstract: 
  • The solution structure of the pleckstrin homology (PH) domain of mouse Son-of-sevenless 1 (mSos1), a guanine nucleotide exchange factor for Ras, was determined by multidimensional NMR spectroscopy. The structure of the mSos1 PH domain involves the fu ...

    The solution structure of the pleckstrin homology (PH) domain of mouse Son-of-sevenless 1 (mSos1), a guanine nucleotide exchange factor for Ras, was determined by multidimensional NMR spectroscopy. The structure of the mSos1 PH domain involves the fundamental PH fold, consisting of seven beta-strands and one alpha-helix at the C terminus, as determined for the PH domains of other proteins. By contrast, the mSos1 PH domain showed two major characteristic features. First, the N-terminal region, whose amino acid sequence is highly conserved among Sos proteins, was found to form an alpha-helix, which interacts with the beta-sheet structure of the fundamental PH fold. Second, there is a long unstructured loop between beta3 and beta4. Furthermore, the mSos1 PH domain was found to bind phosphatidylinositol-4,5-bisphosphate by a centrifugation assay. The addition of inositol-1,4,5-trisphosphate to the mSos1 PH domain induced backbone amide chemical shift changes mainly in the beta1/beta2 loop and the N- and C-terminal parts of the long beta3/beta4 loop. This inositol-1,4,5-trisphosphate-binding mode of the mSos1 PH domain is somewhat similar to those of the PH domains of pleckstrin and phospholipase Cdelta1, and is clearly different from those of other PH domains.


    Organizational Affiliation

    Cellular Signaling Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SOS 1A136Mus musculusMutation(s): 1 
Gene Names: Sos1
Find proteins for Q62245 (Mus musculus)
Explore Q62245 
Go to UniProtKB:  Q62245
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • OLDERADO: 1PMS Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-05-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance