2-iminoacetate synthase activity
Catalysis of the reaction: L-tyrosine + S-adenosyl-L-methionine + reduced acceptor = 2-iminoacetate + 4-methylphenol + 5'-deoxyadenosine + L-methionine + acceptor + 2 H+.
GO:0016830
carbon-carbon lyase activity
is_a