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.
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Question: 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 .

Answer: Enzyme I

Question: TOM1 encodes a member of the hect - domain - containing E3 ubiquitin - protein ligase family that is required for growth at elevated temperatures .

Answer: hect - domain

Question: Serum C3 was measured in 1 , 282 school children with abnormal urinary findings between 1980 and 1997 .

Answer:
Serum C3