S100B (9A11) Antibody

S100-B protein (S100 calcium-binding protein B) binds weakly to calcium but strongly to zinc at different sites. Physiological concentrations of potassium antagonize the binding of both divalent cations, especially the high-affinity calcium-binding sites. S100-B activates STK38 by releasing autoinhibitory intramolecular interactions within the kinase.