label: L-tyrosyl-tRNA(Tyr) + L-arginyl-tRNA(Arg) <=> cyclo(L-arginyl-L-tyrosyl) + tRNA(Tyr) + tRNA(Arg) + H(+)
label_lc: l-tyrosyl-trna(tyr) + l-arginyl-trna(arg) <=> cyclo(l-arginyl-l-tyrosyl) + trna(tyr) + trna(arg) + h(+)