S-100 protein alpha chain ; S-100 protein subunit alpha ; S100 calcium-binding protein A1
Categories
Elisa
Function
Weakly binds calcium but binds zinc very tightly-distinct binding sites with different affinities exist for both ions on each monomer. Physiological concentrations of potassium ion antagonize the binding of both divalent cations, especially affecting high-affinity calcium-binding sites.
Dimer of either two alpha chains, or two beta chains, or one alpha and one beta chain. Interacts with AGER and CAPZA1 (By similarity). Interacts with FKBP4.