recombinant human/mouse/rat follistatin-resistant activin A protein (Qk035)
Follistatin-resistant activin A (FRACTA) has been engineered to prevent binding to the natural inhibitor, follistatin. Activin A activity protein is regulated in vivo by follistatin, a high-affinity inhibitor; follistatin accumulates in stem cell culture, where it inhibits activin A.
Qk035 follistatin-resistant activin A (FRACTA) has equivalent bioactivity to wild-type activin A (Qk001) but does not bind follistatin so is resistant to feedback inhibition. High purity 26 kDa dimer comprising engineered mature domain of activin A protein, animal-free (AF) and carrier-protein free (CF). This specialised activin A has been developed in Marko Hyvönen’s group in the University of Cambridge.
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