IL-2isaTcellstimulatorycytokinebestknownforinducingactivatedTcellproliferationinvitro.IL-2alsostimulatesproliferationanddifferentiationofBcells,naturalkillercells,monocytesandmacrophages.IL-2iscriticalforthedevelopment,survival,andfunctionofCD4+CD25+regulatoryTcells,whichpromotesTcelltolerancebysuppressingTcellresponsestoself-antigensinvivo,thusinhibitingimmuneresponsesandpreventingautoimmunediseases.IL-2playsanessentialroleinsensitizingTcellstoactivation-inducedcelldeath,aprocessmediatedprimarilybyFasandTNFsignalstolimitthemagnitudeofTcellexpansionthroughprogrammeddeathofactivatedTcells.IL-2bindstoandsignalsthroughmembranereceptorIL-2R,whichisexpressedalmostexclusivelybyactivatedT-cells.IL-2RisatrimericreceptorcomplexconsistingofthreedistinctsubunitsdesignatedasIL-2Rα(CD25),IL-2Rβ(CD122),andcommonγ-chain(γc,CD132).IL-2RαbindsexclusivelytoIL-2withlowaffinityandincreasesbindingaffinityofthewholereceptorcomplex,includingIL-2Rβandγcsubunits.IL-2RβisalsousedbyIL-15.Thecommonγcisusedbyothercytokines,includingIL-4,IL-7,IL-9,IL-15,andIL-21.BindingofIL-2initiatessignalingcascadesinvolvingJak1,Jak3,Stat5andthePI3K/Aktpathways(2-5).RecombinantHumanIL-2ACFhasaserinesubstituteforcysteineatposition126.RecombinantHumanIL-2ACFisanon-glycosylatedprotein,containing134aminoacids,withamolecularweightof15.5kDa.

• AccessionNumber:P60568
   
• Synonyms:Tcellgrowthfactor,TCGF,Aldesleukin
   
• Purity:≥90%determinedbyreducingandnon-reducingSDS-PAGEanalysis
   
• Bioactivity: TheED₅₀istypicallylessthan1ng/mL.ED₅₀isdeterminedbythedose-dependentproliferationofCD3+Tcells.
   
• Animalcomponent-freeandcarrier-free
   
• Custompackagingavailable

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