Sequence analysis of the nicks and termini of bacteriophage T5 DNA. |
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Authors: | B P Nichols and J E Donelson |
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Abstract: | Bacteriophage T5 DNA, when isolated from mature phage particles, contains several nicks in one of the two strands. The 5'-terminal nucleotides at the nicks were labeled with polynucleotide kinase and [gamma-32P]ATP, and the 3'-terminal nucleotides were labeled with Escherichia coli DNA polymerase I and [alpha-32P]dGTP. The sequences around the nicks were analyzed by partial nuclease digestion followed by homochromatography fractionation of the resulting oligonucleotides. The nicks had at least the sequence -PuOH pGpCpGpC- in common. In addition, the two 5' external termini had the first seven nucleotides in common. |
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