Nucleic Acids Research, 1977, Vol. 4, No. 2 339-352
© 1977
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Sequence analysis of T1 ribonuclease fragments of 18S ribosomal RNA by 5'-terminal labeling, partial digestion, and homochromatography fingerprinting
Department of Pharmacology, Baylor College of Medicine Houston, TX 77030, USA
Received November 3, 1976. The method employed to determine the sequence of a Tl RNase fragment, A-A-A-A-A-U-A-A-C-A-A-U-A-C-A-Gp, from Novikoff rat hepatoma 18S ribosomal RNA is described. This method is applicable to any oligoribonucleotide produced by specific endonucleases that leave the newly cleaved 5'-end free for labeling with polynucleotide kinase and y-[32p]-ATP. The [32p]-labeled oligoribonucleotide is subjected to partial endonucleolytic digestion and fractionated by two-dimensional homochromatography fingerprinting. The nucleotide sequence is determined by following mobility shifts of the labeled and partially digested oligoribonucleotides in homochromatography fingerprinting.
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