For example, the digestive enzyme pepsin arises when HCl cleaves the proenzyme pepsinogen. (scientificamerican.com)
Acid can cause inflammation by affecting the digestive enzyme pepsin. (mindbodygreen.com)
To learn which genes in the mussel make the byssal threads, the researchers first treated the threads with the enzyme pepsin to liquefy their interlocking networks of proteins. (sciencemag.org)