In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Ex Input:
Two genes ( ptsI and ptsA ) that encode homologues of the energy coupling Enzyme I of the phosphoenolpyruvate - dependent sugar - transporting phosphotransferase system ( PTS ) have previously been identified on the Escherichia coli chromosome .

Ex Output:
Enzyme I

Ex Input:
Symptoms , skin - prick tests ( SPT ) with environmental allergens and Pt salt , total serum IgE , lung function , and bronchial hyperresponsiveness were assessed by standard procedures .

Ex Output:
serum IgE

Ex Input:
After inhibition of monoamine oxidase with pargyline ( 10 mg / kg . i . v . ) , the effects of tyramine ( 1000 micrograms ) injected into the hepatic artery were potentiated .

Ex Output:
monoamine oxidase