Like the other aromatic amino acid hydroxylases (AAAHs), tyrosine hydroxylase use the cofactor tetrahydrobiopterin (BH4) under normal conditions, although other similar molecules may also work as a cofactor for tyrosine hydroxylase.
Tyrosine hydroxylase functions in the same manner as other aromatic amino acid hydroxylases (AAAHs), employing tetrahydrobiopterin (BH4) as its cofactor under normal conditions, with similar molecules potentially serving as a cofactor for tyrosine hydroxylase.