| EntrezGeneSummary | TheproteinencodedbythisgeneisamemberoftheS100familyofproteinscontaining2EF-handcalcium-bindingmotifs.S100proteinsarelocalizedinthecytoplasmand/ornucleusofawiderangeofcells,andinvolvedintheregulationofanumberofcellularprocessessuchascellcycleprogressionanddifferentiation.S100genesincludeatleast13memberswhicharelocatedasaclusteronchromosome1q21;however,thisgeneislocatedat21q22.3.ThisproteinmayfunctioninNeuriteextension,proliferationofmelanomacells,stimulationofCa2+fluxes,inhibitionofPKC-mediatedphosphorylation,astrocytosisandaxonalproliferation,andinhibitionofmicrotubuleassembly.Chromosomalrearrangementsandalteredexpressionofthisgenehavebeenimplicatedinseveralneurological,neoplastic,andothertypesofdiseases,includingAlzheimer"sdisease,Down"ssyndrome,epilepsy,amyotrophiclateralsclerosis,melanoma,andtypeIdiabetes. | 
| UniProtSummary | FUNCTION:Weaklybindscalciumbutbindszincverytightly-distinctbindingsiteswithdifferentaffinitiesexistforbothionsoneachmonomer.Physiologicalconcentrationsofpotassiumionantagonizethebindingofbothdivalentcations,especiallyaffectinghigh-affinitycalcium-bindingsites.BindstoandinitiatestheactivationofSTK38byreleasingautoinhibitoryintramolecularinteractionswithinthekinase. SUBUNITSTRUCTURE:Dimerofeithertwoalphachains,ortwobetachains,oronealphaandonebetachain.TheS100BdimerbindstwomoleculesofSTK38Bysimilarity.TheS100BdimerinteractswithtwomoleculesofCAPZA1.
 SUBCELLULARLOCATION:Cytoplasm.Nucleus.
 TISSUESPECIFICITY:Althoughpredominantamongthewater-solublebrainproteins,S100isalsofoundinavarietyofothertissues.
 MISCELLANEOUS:Inadditiontometal-ionbinding,thisproteinisinvolvedwiththeregulationofproteinphosphorylationinbraintissue.
 SEQUENCESIMILARITIES:BelongstotheS-101family.
 Contains2EF-handdomains.
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