six thionucleosides found in bacillus subtilis transfer ribonucleic acids were investigated : n6- ( delta 2-isopentenyl ) -2-methylthioadenosine , 5-carboxymethylaminomethyl-2-thiouridine , 4-thiouridine , 2-methylthioadenosine , n- [ ( 9-beta-d-ribofuranosyl-2-methylthiopurin-6-yl ) carbamoyl ] threonine , and one unknown ( x1 ) .
C0039922
thionucleosides
C0039959
4-thiouridine