Claim: Dimethylglycine dehydrogenase is an enzyme belonging to the family of oxireductases, which has neither substrates nor a systematic name.
Evidence: The 3 substrates of this enzyme are N,N-dimethylglycine, acceptor, and H2O, whereas its 3 products are sarcosine, formaldehyde, and reduced acceptor. The systematic name of this enzyme class is N,N-dimethylglycine:acceptor oxidoreductase (demethylating).