_EC 1.4.4.- With a disulfide as acceptor. 11 PDB entries  
EC 1.-.-.- Oxidoreductases. [21,435 PDB entries]
EC 1.4.-.- Acting on the CH-NH2 group of donors. [697 PDB entries]
EC 1.4.4.- With a disulfide as acceptor. [11 PDB entries]
EC 1.4.4.1 Transferred entry: 1.21.4.1. [-]
EC 1.4.4.2 glycine dehydrogenase (aminomethyl-transferring). [11 PDB entries]

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