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Related Experiment Videos

Phosphoserine/threonine-binding domains.

M B Yaffe1, A E Elia

  • 1Center for Cancer Research E18-580, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. myaffe@mit.edu

Current Opinion in Cell Biology
|March 15, 2001
PubMed
Summary
This summary is machine-generated.

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Recent research shows serine/threonine phosphorylation directly forms signaling complexes via phosphoserine/threonine (pSer/Thr)-binding modules. This discovery expands our understanding of protein signaling networks and their regulation.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Biochemistry

Background:

  • Traditionally, serine/threonine phosphorylation regulates protein catalytic activity allosterically.
  • Emerging evidence reveals phosphorylation also mediates protein-protein interactions.
  • Specific phosphoserine/threonine (pSer/Thr)-binding modules recognize phosphorylated motifs.

Purpose of the Study:

  • To highlight the novel role of serine/threonine phosphorylation in forming multimolecular signaling complexes.
  • To identify known pSer/Thr-binding proteins and domains.
  • To explore the implications of these interactions for cellular signaling specificity.

Main Methods:

  • Literature review of recent research (past five years) on serine/threonine phosphorylation.

Related Experiment Videos

  • Identification and categorization of pSer/Thr-binding modules (e.g., 14-3-3, WW domains).
  • Analysis of sequence recognition and structural basis of pSer/Thr binding.

    • Main Results:

    • Serine/threonine phosphorylation directly drives the assembly of signaling complexes.
    • Key pSer/Thr-binding modules include 14-3-3, WW, and forkhead-associated domains.
    • Binding specificities are controlled by kinase motifs and binding module interactions.

    Conclusions:

    • Phosphorylation-dependent protein-protein interactions are a major mechanism for signaling complex formation.
    • The discovery of pSer/Thr-binding modules expands the known regulatory roles of phosphorylation.
    • Convergent evolution likely explains the diverse structural mechanisms of pSer/Thr binding.