title: Polyarabinouridylic acid: primordial messenger or inhibitor?
mesh_terms: D001089:Arabinose; D001426:Bacterial Proteins / Q000096:biosynthesis; D005075:Biological Evolution; D002247:Carbon Isotopes; D004926:Escherichia coli; D005815:Genetic Code; D011119:Polynucleotides; D012343:RNA, Transfer; D012260:Ribonucleases / Q000037:antagonists & inhibitors*; D012270:Ribosomes; D013698:Templates, Genetic; D014500:Uracil Nucleotides
chemical_list: D001426:Bacterial Proteins; D002247:Carbon Isotopes; D011119:Polynucleotides; D014500:Uracil Nucleotides; D012343:RNA, Transfer; D001089:Arabinose; D012260:Ribonucleases