Tyrosine sulfation is a process in which a sulfonic acid group is added to a tyrosine residue in a protein. It plays an important role in several biological processes such as cell adhesion and signaling. There are a few synonyms for tyrosine sulfation, including tyrosine sulfation modification, tyrosine sulfation reaction, or simply tyrosine sulfation. It can also be referred to as protein sulfation, as it is the sulfation of a specific amino acid in a protein. Despite its importance, tyrosine sulfation is relatively understudied, and more research is needed to fully understand its effects on cellular functions.