What is the fine-grained topic of the following text: Paulsen, C.E., Armache, J.P., Gao, Y., Cheng, Y., Julius, D.
The TRPA1 ion channel (also known as the wasabi receptor) is a detector of noxious chemical agents encountered in our environment or produced endogenously during tissue injury or drug metabolism. Only return the topic.
The TRPA1 ion channel and its role as a detector of noxious chemical agents