preferred_name: GTP + AH2 + S-adenosyl-L-methionine = 3'-deoxy-3',4'-didehydro-GTP + 5'-deoxyadenosine + L-methionine + A + H2O + H(+)
preferred_name_lc: gtp + ah2 + s-adenosyl-l-methionine = 3'-deoxy-3',4'-didehydro-gtp + 5'-deoxyadenosine + l-methionine + a + h2o + h(+)
label: GTP + AH2 + S-adenosyl-L-methionine = 3'-deoxy-3',4'-didehydro-GTP + 5'-deoxyadenosine + L-methionine + A + H2O + H(+)
label_lc: gtp + ah2 + s-adenosyl-l-methionine = 3'-deoxy-3',4'-didehydro-gtp + 5'-deoxyadenosine + l-methionine + a + h2o + h(+)