title: Photoreaction of 4-thiouracil with cytosine. Relation to photoreactions in Escherichia coli transfer ribonucleic acids.
mesh_terms: D001894:Borohydrides; D055598:Chemical Phenomena; D002621:Chemistry; D003596:Cytosine / Q000528:radiation effects*; D004926:Escherichia coli / Q000528:radiation effects*; D005470:Fluorometry; D008956:Models, Chemical; D008961:Models, Structural; D010084:Oxidation-Reduction; D010777:Photochemistry; D011744:Pyrimidinones / Q000138:chemical synthesis; D012343:RNA, Transfer / Q000528:radiation effects*; D011830:Radiation Effects; D013053:Spectrophotometry; D013889:Thiouracil / Q000138:chemical synthesis / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014498:Uracil / Q000528:radiation effects
chemical_list: D001894:Borohydrides; D011744:Pyrimidinones; D014498:Uracil; D013889:Thiouracil; D003596:Cytosine; D012343:RNA, Transfer