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  • Title: A physical map of the genome of temperate phage phi 3T.
    Author: Cregg JM, Ito J.
    Journal: Gene; 1979 Jul; 6(3):199-219. PubMed ID: 113290.
    Abstract:
    A physical map of the genome of Bacillus subtilis bacteriophage phi 3T was constructed by ordering the fragments produced by cleavage of phi 3T DNA with restriction endonucleases AvaII (2 fragments), BglI (2 fragments), SmaI (3 fragments), BamHI (6 fragments), SalI (7 fragments), AvaI (7 fragments), SacI (12 fragments), PstI (14 fragments), and BglII (26 fragments). Two techniques were used to order the fragments: (1) Sets of previously ordered restriction fragments were isolated and redigested with the endonuclease whose cleavage sites were to be mapped. (2) Fragments located near the ends of the genome or near the ends of other restriction fragments were ordered by treating the DNA with lambda exonuclease prior to restriction endonuclease cleavage. The susceptibility of phi 3T DNA to 15 other restriction endonucleases is also reported.
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