Cytoplasmic DNA in the unfertilized sea urchin egg: physical properties of circular mitochondrial DNA and the occurrence of catenated forms. | Zendy

Lajos Pikó | Zendy; Donald G. Blair | Zendy; Albert Tyler | Zendy; Jerome Vinograd | Zendy

Open Access

Cytoplasmic DNA in the unfertilized sea urchin egg: physical properties of circular mitochondrial DNA and the occurrence of catenated forms.

Author(s) -

Lajos Pikó,

Donald G. Blair,

Albert Tyler,

Jerome Vinograd

Publication year - 1968

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.59.3.838

Subject(s) - physics , quantum , sea urchin , symmetry (geometry) , mitochondrial dna , interpretation (philosophy) , dna , classical mechanics , quantum mechanics , theoretical physics , biology , mathematics , geometry , genetics , computer science , paleontology , gene , programming language

The mitochondrial DNA in the unfertilized egg of the sea urchin Lytechinus pictus is present in an amount approximately seven times that of the haploid nuclear DNA.(1) The mitochondrial DNA has a higher buoyant density than the nuclear DNA and consists of circular duplex molecules of a uniform size of about 5µ. The circular DNA has been recovered(1) in both the intact (closed) and nicked (open) states characteristic of the circular duplex viral DNA's(2) and the mitochondrial DNA's from birds and mammals.(3, 4)

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