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Related Concept Videos

Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
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Conservation of Protein Domains Over Different Proteins

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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
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Conserved Binding Sites01:49

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Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
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Related Experiment Video

Updated: Jun 12, 2026

In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes
10:05

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Published on: August 13, 2012

PDZ domains and their binding partners: structure, specificity, and modification.

Ho-Jin Lee1, Jie J Zheng

  • 1Department of Structural Biology, St, Jude Children's Research Hospital, Memphis, TN 38105, USA. jie.zheng@stjude.org.

Cell Communication and Signaling : CCS
|June 1, 2010
PubMed
Summary

PDZ domains are key protein interaction modules regulating cellular processes. This review explores their structure, binding properties, and regulatory mechanisms for better understanding biological systems.

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Area of Science:

  • Molecular Biology
  • Biochemistry
  • Structural Biology

Background:

  • PDZ domains are prevalent protein modules recognizing C-terminal motifs.
  • They are crucial in biological processes like transport and signal transduction.

Purpose of the Study:

  • To review the structural characterization of PDZ domains.
  • To discuss emerging technologies for studying PDZ interactions.
  • To explore regulatory mechanisms of PDZ-mediated interactions.

Main Methods:

  • Structural characterization of PDZ domains.
  • Utilizing proteomic arrays and peptide libraries.
  • Analysis of regulatory mechanisms like phosphorylation.

Main Results:

  • PDZ domains bind specific C-terminal motifs.
  • Emerging technologies offer new insights into binding properties.
  • Phosphorylation impacts PDZ domain interactions.

Conclusions:

  • Understanding PDZ domain interactions is vital for cellular processes.
  • Further research on PDZ networks and regulation will advance biological knowledge.