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Table 1 Origin of oxygen in the hydroxylation and oxidation products of benzene and phenol formed by Aae APO in the presence of H 2 18 O 2

From: Benzene oxygenation and oxidation by the peroxygenase of Agrocybe aegerita

Substrate Oxygen atoms in hydroquinone [rel.%] Oxygen atoms in p-benzoquinone [rel.%] Oxygen atoms in catechol [rel.%]
  16 O/16 O 16 O/18 O 18 O/18 O 16 O/16 O 16 O/18 O 18 O/18 O 16 O/16 O 16 O/18 O 18 O/18 O
Benzene n.d.§ n.d.§ n.d.§ 20 55 25 100 0 0
Benzene# 9 25 66 n.d.§ § n.d.§ § n.d.§ § 18 31 51
Phenol 42 58 0 42 58 0 100 0 0
Phenol# 3 97 0 n.d.§ § n.d.§ § n.d§§ 6 94 0
  1. # in presence of ascorbic acid (4 mM).
  2. § n.d. – not detectable, the concentration was too low to give a viable LC-MS signal.
  3. §§ n.d. – not detected in the presence of ascorbic acid.