title: Thiobases in escherichia coli transfer RNA: 2-thiocytosine and 5-methylaminomethyl-2-thiouracil.
mesh_terms: D003597:Cytosine Nucleotides / Q000032:analysis*; D004926:Escherichia coli / Q000032:analysis*; D012343:RNA, Transfer / Q000032:analysis*; D013057:Spectrum Analysis; D013455:Sulfur / Q000032:analysis*; D014500:Uracil Nucleotides / Q000032:analysis* / Q000138:chemical synthesis*
chemical_list: D003597:Cytosine Nucleotides; D014500:Uracil Nucleotides; D013455:Sulfur; D012343:RNA, Transfer