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: Amelioration of palmitate-induced insulin resistance in C2C12 muscle cells by rooibos (Aspalathus linearis).

Answer: insulin


Question: Neuronal expression of glucosylceramide synthase in central nervous system regulates body weight and energy homeostasis.

Answer: glucosylceramide synthase


Question: The catalytic competence of cytochrome P450 in the synthesis of serotonin from 5-methoxytryptamine in the brain: an in vitro study.

Answer:
cytochrome P450