magnesium and manganese ions bind strongly to the unusual transfer rna anticodon loop nucleotides , n- [ ( 9-beta-d-ribofuranosyl-9h-purin-6-yl ) carbamoyl ] -l-threonine 5'-monophosphate ( pt6a ) and uridine-5-oxyacetic acid 5'-monophosphate ( pv ) .
C0035711
transfer rna
C0003284
anticodon