ID   2.4.2.64
DE   tRNA-guanosine(34) queuine transglycosylase.
AN   guanine insertion enzyme.
AN   Q-insertase.
AN   queuine(34) transfer ribonucleate ribosyltransferase.
AN   queuine tRNA-ribosyltransferase.
AN   TGT.
AN   tRNA transglycosylase.
CA   guanosine(34) in tRNA + queuine = guanine + queuosine(34) in tRNA.
CC   -!- Certain prokaryotic and eukaryotic tRNAs contain the modified base
CC       queuine at position 34.
CC   -!- In eukaryotes and a small number of prokaryotes queuine is salvaged
CC       and incorporated into tRNA directly via a base-exchange reaction,
CC       replacing guanine. cf. EC 2.4.2.29.
DR   A8X0P0, TGT_CAEBR  ;  Q23623, TGT_CAEEL  ;  Q7SYK1, TGT_DANRE  ;
DR   Q9VPY8, TGT_DROME  ;  Q9BXR0, TGT_HUMAN  ;  Q9JMA2, TGT_MOUSE  ;
DR   Q4QR99, TGT_RAT    ;  O94460, TGT_SCHPO  ;  Q4QQY7, TGT_XENLA  ;
DR   Q28HC6, TGT_XENTR  ;
//