Type
Recombinant
Description
ActivinA isaTGF-βfamilymemberthatexhibitsawiderangeofBIOLOGicalactivities,includingregulationofcellularproliferationanddifferentiation,andpromotionofneuronalsurvival.ElevatedlevelsofActivinA inhumancolorectaltumorsandinpostmenopausalwomenhavebeenimplicatedincolorectalandbreastcancers,respectively.ThebiologicalactivitiesofActivinA canbeneutralizedbyinhibinsandbythediffusIBLeTGF-βantagoNIST,follistatin.ActivinA bindstothetwoformsofactivinreceptortypeI(ActRI-A andActRI-B)andtwoformsofactivinreceptortypeII(ActRII-A andActRII-B).Activinsarehomodimersorheterodimersofdifferentβsubunits.TheyareproducedasprecursorproteinswithanaminoterminalpropeptidethatiscleavedtoreleasetheC-terminalbioactiveligand.Human/Murine/RatActivinA isa26.0 kDadisulfide-linkedhomodimeroftwoβAchains,eachcontaining116 aminoacidresidues.
AminoAcidSequence
GLECDGKVNICCKKQFFVSFKDIGWNDWIIAPSGYHANYCEGECPSHIAGTSGSSLSFHSTVINHYRMRGHSPFANLKSCCVPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS
Source
E.coli
Purity
97
BiologicalActivity
TheED50asdeterminedbyitsABIlitytoinhibittheproliferationofmurineMPC-11 cellsis2.0 ng/ml,correspondingtoaspecificactivityof5×105 units/mg.
Storage/Expiration
–20°C