_EC 1.8.3.- With oxygen as acceptor. 88 PDB entries  
EC 1.-.-.- Oxidoreductases. [21,435 PDB entries]
EC 1.8.-.- Acting on a sulfur group of donors. [762 PDB entries]
EC 1.8.3.- With oxygen as acceptor. [88 PDB entries]
EC 1.8.3.1 sulfite oxidase. [17 PDB entries]
EC 1.8.3.2 thiol oxidase. [39 PDB entries]
EC 1.8.3.3 glutathione oxidase. [-]
EC 1.8.3.4 methanethiol oxidase. [-]
EC 1.8.3.5 prenylcysteine oxidase. [1 PDB entries]
EC 1.8.3.6 farnesylcysteine lyase. [-]
EC 1.8.3.7 formylglycine-generating enzyme. [31 PDB entries]

[-] signifies that there are no PDB entries for the given enzyme subclass