<p>Phenol hydroxylase is a homodimer which hydroxylates phenol to catechol, or similar products. The enzyme is comprised of three domains. The first two domains form the active site. The third domain, this domain, is involved in forming the dimerisation interface. The domain adopts a thioredoxin-like fold [<cite idref="PUB00016415"/>].</p> Phenol hydroxylase, C-terminal dimerisation