Electron Microscopic Studies of Replicating and Catenated Colicin Factor E1 DNA Isolated from Minicells | Zendy

Motohiro Fuke | Zendy; Joseph Inselburg | Zendy

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Electron Microscopic Studies of Replicating and Catenated Colicin Factor E1 DNA Isolated from Minicells

Author(s) -

Motohiro Fuke,

Joseph Inselburg

Publication year - 1972

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.69.1.89

Subject(s) - dna , molecule , colicin , chemistry , crystallography , stereochemistry , biophysics , biology , biochemistry , plasmid , organic chemistry

Replicating and catenated DNA molecules of colicin factor E1 that were isolated from minicells were observed by electron microscopy. Two new replicating structures that have been found include: molecules that contain two untwisted replicated branches of the same length and a twisted unreplicated branch, and a twisted circular molecule with a long tail. Other molecular forms identified include circular dimers, three types of catenated dimers (open-open, open-twisted, and twisted-twisted), catenated dimers in which one of the linked molecules is replicating, catenated trimers, and a tetamer.

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