S100B Mouse Recombinant Protein

S100B: 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. Binds to and initiates the activation of STK38 by releasing autoinhibitory intramolecular interactions within the kinase. Interaction with AGER after myocardial infarction may play a role in myocyte apoptosis by activating ERK1/2 and p53/TP53 signaling. Dimer of either two alpha chains, or two beta chains, or one alpha and one beta chain. The S100B dimer binds two molecules of STK38. Interacts with AGER. The S100B dimer interacts with two molecules of CAPZA1. Although predominant among the water-soluble brain proteins, S100 is also found in a variety of other tissues. Belongs to the S-101 family.

Protein type: Calcium-binding

Cellular Component: ruffle; extracellular space; intracellular membrane-bound organelle; cell soma; perinuclear region of cytoplasm; cytoplasm; extracellular region; nucleus

Molecular Function: identical protein binding; RAGE receptor binding; protein homodimerization activity; zinc ion binding; metal ion binding; calcium ion binding; calcium-dependent protein binding; receptor binding

Biological Process: regulation of long-term neuronal synaptic plasticity; cellular calcium ion homeostasis; regulation of cell shape; learning and/or memory; positive regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of apoptosis; positive regulation of cell proliferation; energy reserve metabolic process; positive regulation of synaptic transmission; memory; regulation of cytokine biosynthetic process; regulation of neuronal synaptic plasticity