BackgroundInformation | CREBisabetaZIPtranscriptionfactorthatactivatestargetgenesthroughcAMPresponseelements.CREBisabletomediatesignalsfromnumerousphysiologicalstimuli,resultinginregulationofabroadarrayofcellularresponses.WhileCREBisexpressedinnumeroustissues,itplaysalargeregulatoryroleinthenervoussystem.CREBisbelievedtoplayakeyroleinpromotingneuronalsurvival,precursorproliferation,neuriteoutgrowthandneuronaldifferentiationincertainneuronalpopulations.Additionally,CREBsignalingisinvolvedinlearningandmemoryinseveralorganisms.CREBisabletoselectivelyactivatenumerousdownstreamgenesthroughinteractionswithdifferentdimerizationpartners.CREBisactivatedbyphosphorylationatSer133byvarioussignalingpathwaysincludingErk,Ca2+andstresssignaling.SomeofthekinasesinvolvedinphosphorylatingCREBatSer133arep90RSK,MSK,CaMKIVandMAPKAPK-2. |