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. |