trna ( 1 ) ( phe ) accumulates only under special growth conditions and is an incompletely modified precursor oftrna ( 2 ) ( phe ) : in the first position of the anticodon , guanosine replaces gm , and next to the 3 ' end of the anticodon ( isopentenyl ) adenosine replaces 2-thiomethyl-n ( 6 ) - ( isopentenyl ) adenosine .
C0035711
trna
C0003284
anticodon