Nucleic Acids Research, 1980, Vol. 8, No. 18 4143-4154
© 1980
MOLECULAR BIOLOGY |
Nucleotide sequences of nuclear U1A RNAs from chicken, rat and man


Institut de Biologie Moléculaire et Cellulaire (CNRS), Université Louis Pasteur de Strasbourg 15 rue René Descartes, 67084 Strasbourg Cédex, France
Received July 8, 1980.
The methods of enzymatic and chemical treatment of end-labeled RNA were applied to the determination of the nucleotide sequence of chicken and man U1A RNA and to the reexamination of that of rat U1A RNA. The chemical method allowed the easy demonstration of the cap structure. All three RNA were 165 nucleotide long. Two hither to non described modified pyrimidines were detected close to the 5' end. Only 9 base substitutions were observed from chicken to man indicating a high degree of conservation of U1A RNA through evolution.
+Laboratoire de Génétique Moléculaire des Eucaryotes (CNRS), Unité de Biologie Moléculaire et de Génie Génétique (U184, INSERM), 11 rue Humann, 67085 Strasbourg Cédex, France.
Laboratoire Biologie Moléculaire, Université des Sciences et Techniques du Languedoc 34060 Montpellier Cédex, France.
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