A DNA fragment containing the origin of replication of the Escherichia coli chromosome.
نویسندگان
چکیده
A 38 kilobase pair region of the Escherichia coli K12 chromosome containing the replication origin has been physically mapped with restriction endonucleases EcoRI and HindIII. Replication starts within or very near a 1.3 kilobase pair HindIII fragment in the middle of this region and proceeds outward in both directions with apparently equal speed. This pattern was observed in both dnaA and dnaC temperature-sensitive (ts) initiation mutants at the start of the synchronous round of replication which occurs after downshift from the nonpermissive to the permissive temperature.
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عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 74 7 شماره
صفحات -
تاریخ انتشار 1977