S100 calcium-binding protein B (S100-B)

S100 calcium-binding protein B (S100-B) exists as a homodimer of either two A or B chains or as a heterodimer. It is predominantly found in the brain. S100-B acts as a neurotrophic factor and neuronal survival protein. In adults, it is elevated with nervous system damage, making it a potential clinical marker. Altered expression of this gene has been implicated in several neurological diseases. S100-B weakly binds calcium but binds zinc very tightly in distinct binding sites with different affinities 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. Could assist ATAD3A cytoplasmic processing, preventing aggregation, and favoring mitochondrial localization.

Swiss-Prot Accession Number: P04271


Publications
Dendritic cell immunotherapy followed by cART interruption during HIV-1 infection induces plasma protein markers of cellular immunity and neutrophil recruitment (2018) van den Ham HJ, Cooper J, Tomasik J, Bahn S, Aerts J, Oseterhaus A, Gruters R, Andeweg A PLoS One
S100A12 and S100A8/9 proteins are biomarkers of articular disease activity in Blau syndrome (2018) Wang L, Rose CD, Foley KP, Anton J, Bader-Meunier B, Brissaud P, Chedeville G, Cimaz R, Fernandez-Martin J, Guly C, Hachulla E, Harjacek M, Mackensen F, Merino R, Modesto C, Hernandez A, Pajot C, Ramanan A, Thatayatikom A, Thomee C, Vastert S, Votta B, Bertin J, Wouters CH Rheumatology
Serum proteins mediate depression’s association with dementia (2017) Royall DR, Al-Rubaye S, Bishnoi R, Palmer RF Plos One
Assessment of Urine Proteomics in Type 1 Primary Hyperoxaluria*American Journal of Nephrology (2016) Brooks ER, Hoppe B, Milliner DS, Salido E, Rim J, Krevitt LM, Olson JB, Price HE, Vural G, Langman CB American Journal of Nephrology
Altered Cerebrospinal Fluid Proteins in Smith–Lemli– (2016) Cologna SM, Shieh C, Toth CL, Cougnoux A, Burkert KR, Bianconi SE, Wassif CA, Porter FD American Journal of Medical Genetics Part A
Multiplex immunoassay analysis of plasma shows prominent upregulation of growth factor activity pathways linked to GSK3ß signaling in bipolar patients (2013) Haenisch F, Alsaif M, Guest PC, Rahmoune H, Dickerson F, Yolken R, Bahn S Journal of Affective Disorders
Proteomic changes induced by anaesthesia and muscle relaxant treatment prior to electroconvulsive therapy (2011) Stelzhammer V, Rothermundt M, Guest PC, Michael N, Sondermann C, Kluge W, Martins-de-Souza D, Rahmoune H, Bahn S Proteomics Clin Appl. 2011 Oct 17.
A Serum Protein-Based Algorithm for the Detection of Alzheimer Disease (2010) O'Bryant SE, Xiao G, Barber R, Reisch J, Doody R, Fairchild T, Adams P, Waring S, Diaz-Arrastia R; for the Texas Alzheimer's Research Consortium Arch Neurol 67: 1077-1081.
Novel CSF biomarkers for frontotemporal lobar degenerations (2010) Hu WT, Chen-Plotkin A, Grossman M, Arnold SE, Clark CM, Shaw LM, McCluskey L, Elman L, Hurtig HI, Siderowf A, Lee VM, Soares H, Trojanowski JQ Neurology 75: 2079-86.