Scrib module proteins: Control of epithelial architecture and planar spindle orientation

Yu ichiro Nakajima

Research output: Contribution to journalShort surveypeer-review

2 Citations (Scopus)


The Scrib module proteins, Scrib, Dlg, and Lgl, are conserved regulators of cell polarity in diverse biological contexts. Originally discovered as neoplastic tumor suppressors in the fruit fly Drosophila melanogaster, disruption of Scrib module components leads to tumorigenesis in mammalian epithelia and is associated with human cancers. With multiple protein interacting domains, Scrib module proteins function as determinants of basolateral identity in epithelial cells with apical-basal polarity while acting as signaling platform scaffold proteins. Recent studies have further revealed novel roles of the Scrib module in the control of epithelial architecture, ranging from polarity establishment and tricellular junction formation to planar spindle orientation during cell division. This review updates the current understanding of the molecular nature and physiological functions of the Scrib module with a focus on in vivo studies, providing a framework for how these protein dynamics affect the processes of epithelial organization.

Original languageEnglish
Article number106001
JournalInternational Journal of Biochemistry and Cell Biology
Publication statusPublished - 2021 Jul


  • Apical-basal polarity
  • Epithelial architecture
  • Planar spindle orientation
  • Scrib module proteins
  • Tricellular junctions

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology


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