The Par3/Par6/aPKC complex and epithelial cell polarity

Exp Cell Res. 2013 Jun 10;319(10):1357-64. doi: 10.1016/j.yexcr.2013.03.021. Epub 2013 Mar 25.


Apical-basal polarity is the basic organizing principle of epithelial cells, and endows epithelial cells to function as defensive barriers and as mediators of vectorial transport of nutrients in and out of organisms. Apical-basal polarity is controlled by a number of conserved polarity factors that regulate cytoskeletal organizations, asymmetric distributions of cellular components, and directional transports across cells. Polarity factors often occupy specific membrane regions in response to the adhesion forces generated by cell-cell and cell-extracellular matrix interactions. Both internal polarity factors and the external extracellular matrices play fundamental roles in epithelial cell polarity establishment and maintenance. This review focuses on recent developments of the Par3/Par6/aPKC complex and its interacting proteins in epithelial cell polarity.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adaptor Proteins, Signal Transducing / metabolism
  • Adherens Junctions / metabolism
  • Animals
  • Cell Adhesion
  • Cell Membrane / metabolism
  • Cell Polarity*
  • Drosophila / metabolism
  • Drosophila Proteins / metabolism*
  • Epithelial Cells / metabolism*
  • Extracellular Matrix / metabolism
  • Humans
  • Intracellular Signaling Peptides and Proteins / metabolism*
  • Mice
  • Multiprotein Complexes / metabolism
  • Protein Kinase C / metabolism*
  • Tight Junctions / metabolism


  • Adaptor Proteins, Signal Transducing
  • Drosophila Proteins
  • Intracellular Signaling Peptides and Proteins
  • Multiprotein Complexes
  • Par6 protein, mouse
  • baz protein, Drosophila
  • PKC-3 protein
  • Protein Kinase C