Function
Responsible for meta-cleavage of the first aromatic ring of 2,2',3-trihydroxybiphenyl and 2,3-dihydroxybiphenyl. 2,2',3-trihydroxydiphenyl ether, catechol, 3-methylcatechol, and 4-methylcatechol are oxidized less efficiently and 3,4-dihydroxybiphenyl is oxidized considerably less efficiently.