Neuron specific enolase (NSE), is an enzyme that in humans is encoded by the ENO2 gene. NSE is a phosphopyruvate hydratase. NSE is produced by small cell carcinomas which are neuroendocrine in origin. NSE is therefore a useful tumor marker for lung cancer patients. . Description: Bovine calf brains. Alternative Names: Neuron Specific Enolase protein, Neuron specific gamma enolase protein , gamma enolase protein, Neuron specific enolase protein, Neural enolase protein, Enolase 2 protein, Enolase 2 gamma neuronal protein, Enolase2 protein, gamma-enolase protein