Phosphatidic acid (PA) is an important intracellular signal molecule and is called the lipid second messenger because several targets of PA have especially been cloned and identified.

磷脂酸(phosphatidicacid, PA)是植物中重要的细胞内信号分子，被称为“脂质第二信使”，特别是几个PA的作用靶点已被克隆和鉴定。

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This is another example of a second messenger, the inositol lipid pathway.

这是另一个第二信使的例子,磷酸肌醇信号通路

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