1OW5

NMR structure of the Saccharomyces cerevisiae SAM (Sterile Alpha Motif) domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry 

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This is version 1.3 of the entry. See complete history


Literature

The solution structure of the S.cerevisiae Ste11 MAPKKK SAM domain and its partnership with Ste50.

Kwan, J.J.Warner, N.Pawson, T.Donaldson, L.W.

(2004) J Mol Biol 342: 681-693

  • DOI: 10.1016/j.jmb.2004.06.064
  • Primary Citation of Related Structures:  
    1OW5

  • PubMed Abstract: 
  • Ste11 is a MAPKKK from Saccharomyces cerevisiae that helps mediate the response to mating pheromone and the ability to thrive in high-salt environments. These diverse functions are facilitated by a direct interaction between the SAM domain of Ste11 with the SAM domain of its regulatory partner, Ste50 ...

    Ste11 is a MAPKKK from Saccharomyces cerevisiae that helps mediate the response to mating pheromone and the ability to thrive in high-salt environments. These diverse functions are facilitated by a direct interaction between the SAM domain of Ste11 with the SAM domain of its regulatory partner, Ste50. We have solved the NMR structure of the Ste11 SAM domain (PDB 1OW5), which reveals a compact, five alpha-helix bundle and a high degree of structural similarity to the Polyhomeotic SAM domain. The combined study of Ste11 SAM rotational correlation times and crosslinking to Ste50-SAM has suggested a mode through which Ste11-SAM oligomerizes and selectively associates with Ste50-SAM. To probe homotypic and heterotypic interations, Ste11-SAM variants each containing a substitution of a surface-exposed hydrophobic residue were constructed. An I59R variant of Ste11-SAM, disrupted binding to Ste50-SAM in vitro. Yeast expressing full-length Ste11-I59R could neither respond to mating pheromone nor thrive in high salt media-demonstrating that the interaction between Ste11 and Ste50 SAM domains is a prerequisite for key signal transduction events.


    Organizational Affiliation

    Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase STE11A85Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: Ste11p
EC: 2.7.1 (PDB Primary Data), 2.7.11.25 (UniProt)
UniProt
Find proteins for P23561 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P23561 
Go to UniProtKB:  P23561
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23561
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-06
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Data collection, Database references, Derived calculations