Modulation of Ion Channels and Receptors by p11 (S100A10)

Trends Pharmacol Sci. 2020 Jul;41(7):487-497. doi: 10.1016/ Epub 2020 May 14.


p11 (S100A10, annexin II light chain, calpactin I light chain) is a multifunctional protein that forms a heterotetrameric complex with Annexin A2, particularly at cell membranes. p11, alone or together with Annexin A2, interacts with several ion channels and receptors and regulates their cellular localization and function. Altered levels of p11 are implicated in the pathophysiology of several forms of cancer, psychiatric disorders, and neurodegeneration. Via interactions with ion channels and receptors, p11 modulates therapeutic actions of drugs targeting brain disorders. By serving as a plasminogen receptor, p11 plays an important role in plasmin generation, fibrinolysis, angiogenesis, tumor progression, and metastasis. Here, we review mechanisms whereby p11 regulates functions of ion channels and receptors in health and disease states.

Keywords: S100A10; annexin A2; annexin II light chain; cancer; depression; p11.

Publication types

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

MeSH terms

  • Annexin A2 / metabolism*
  • Cell Membrane / metabolism
  • Humans
  • Ion Channels / metabolism*
  • S100 Proteins / metabolism*


  • Annexin A2
  • Ion Channels
  • S100 Proteins
  • S100 calcium binding protein A10