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Analysis of the secondary structure of the poly(C) tract in foot-and-mouth disease virus RNAs. 1985

E J Mellor, and F Brown, and T J Harris

Sodium bisulphite modification of foot-and-mouth disease virus (FMDV) RNA in solution indicates that the majority of the poly(C) tract in the RNA is single-stranded in concordance with previous results with encephalomyocarditis virus RNA. The reaction kinetics are biphasic; 60% of the cytidylic acid in the poly(C) tract reacts like synthetic poly(C), and the remainder with the kinetics of the cytidylic acid in the rest of the RNA. The reactivity of the poly(C) tract with poly(I) indicates that it is looped out and exposed in the RNA. The deamination reaction has also been used to investigate the structure of the replicative form (RF) and replicative intermediate (RI) isolated from infected cells. Analysis by gel electrophoresis of the long RNase A- and T1-resistant oligonucleotides of RI suggests that it has five single-stranded poly(C) tracts to every one which is base-paired. Bisulphite reactivity of the poly(C) tract and gel electrophoresis of the ribonuclease-resistant oligonucleotides of RF indicate that the poly(C) is base-paired to a poly(G) tract in this molecule. The presence of a poly(G) tract in RF and RI provides unequivocal evidence that the poly(C) is replicated via poly(G) in the negative strand.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D007700 Kinetics The rate dynamics in chemical or physical systems.
D009690 Nucleic Acid Conformation The spatial arrangement of the atoms of a nucleic acid or polynucleotide that results in its characteristic 3-dimensional shape. DNA Conformation,RNA Conformation,Conformation, DNA,Conformation, Nucleic Acid,Conformation, RNA,Conformations, DNA,Conformations, Nucleic Acid,Conformations, RNA,DNA Conformations,Nucleic Acid Conformations,RNA Conformations
D009843 Oligoribonucleotides A group of ribonucleotides (up to 12) in which the phosphate residues of each ribonucleotide act as bridges in forming diester linkages between the ribose moieties.
D011066 Poly C A group of cytosine ribonucleotides in which the phosphate residues of each cytosine ribonucleotide act as bridges in forming diester linkages between the ribose moieties. Cytosine Polynucleotides,Polycytidylic Acid,Polycytidylic Acids,Acid, Polycytidylic,Acids, Polycytidylic,Polynucleotides, Cytosine
D011131 Polyribonucleotides A group of 13 or more ribonucleotides in which the phosphate residues of each ribonucleotide act as bridges in forming diester linkages between the ribose moieties.
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D005537 Aphthovirus A genus of the family PICORNAVIRIDAE infecting mainly cloven-hoofed animals. They cause vesicular lesions and upper respiratory tract infections. FOOT AND MOUTH DISEASE VIRUS is the type species. Equine rhinitis A virus,Equine rhinovirus 1,Aphthoviruses
D006163 Ribonuclease T1 An enzyme catalyzing the endonucleolytic cleavage of RNA at the 3'-position of a guanylate residue. EC 3.1.27.3. Guanyloribonuclease,RNase T1,Ribonuclease N1,Aspergillus oryzae Ribonuclease,Guanyl-Specific RNase,RNase Apl,RNase F1,RNase Pch 1,RNase ST,Ribonuclease F1,Ribonuclease F2,Ribonuclease ST,Ribonuclease T-1,T 1 RNase,Guanyl Specific RNase,RNase, Guanyl-Specific,RNase, T 1,Ribonuclease T 1,Ribonuclease, Aspergillus oryzae

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