S-Adenosyl-L-ethionine

S-Adenosyl-L-ethionine is an analog of S-Adenosyl-L-methionine. During the HydG-catalyzed process, S-Adenosyl-L-ethionine can replace S-Adenosyl-L-methionine. Under standard enzymatic reaction conditions, HydG effectively utilizes S-Adenosyl-L-ethionine as a substitute co-substrate for S-Adenosyl-L-methionine, producing an Ω intermediate that facilitates the efficient catalytic conversion of the substrate L-tyrosine.