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Updated: Dec 21, 2025

Purification of Human S100A12 and Its Ion-induced Oligomers for Immune Cell Stimulation
Published on: September 29, 2019
Modulation of Ion Channels and Receptors by p11 (S100A10)
Ji-Seon Seo1, Per Svenningsson1
1Department of Clinical Neuroscience, Karolinska Institute, 171 77 Stockholm, Sweden.
Abstract:
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.
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