guanosine(34) in tRNA + queuine => queuosine(34) in tRNA + guanine
guanosine(34) in trna + queuine => queuosine(34) in trna + guanine
guanosine(34) in tRNA + queuine => queuosine(34) in tRNA + guanine
guanosine(34) in trna + queuine => queuosine(34) in trna + guanine