Reaction catalyzed by S-adenosylmethionine:tRNA ribosyltransferase-isomerase (2.4.99.17)
+
7-aminomethyl-7-deazaguanosine in tRNA
=
+
+
epoxyqueuosine in tRNA
S-adenosyl-L-methionine
+
7-aminomethyl-7-deazaguanosine in tRNA
=
L-methionine
+
adenine
+
epoxyqueuosine in tRNA
