Novel polypeptide that suppresses neuronal cell death induced by several familial Alzheimers disease genes and by amyloidbeta-protein (human). The secretion of amyloidbeta-protein (1-40) and amyloid beta protein (1-42) has been shown not to be affected by humanin in F11 cells expressing the familial Alzheimers disease gene K595N/M596L-APP. Inhibitory actions on neuronal cell death triggered by K595N/M596L-APP directly and caused by amyloidbeta-protein have been suggested. MW: 2687.3 Da. Purity >98 % purified