Reaction catalyzed by [ribosomal protein S12] (aspartate89-C3)-methylthiotransferase (2.8.4.4)
3-methylthioaspartate89-[ribosomal protein S12 20mer peptide]
+
sulfur-(sulfur carrier)
+
2
=
3,3-bismethylthioaspartate89-[ribosomal protein S12 20mer peptide]
+
+
(sulfur carrier)
+
+
3-methylthioaspartate89-[ribosomal protein S12 20mer peptide]
+
sulfur-(sulfur carrier)
+
2 S-adenosyl-L-methionine
=
3,3-bismethylthioaspartate89-[ribosomal protein S12 20mer peptide]
+
S-adenosyl-L-homocysteine
+
(sulfur carrier)
+
L-methionine
+
5'-deoxyadenosine
