Cyanelle DNA from Cyanophora paradoxa exists in two forms due to intramolecular recombination

FEBS Letters

Bohnert, Hans J.¹  Löffelhardt, Wolfgang¹ 

[1] Max-Planck-Institut für Züchtungsforschung, D-5000 Köln-Vogelsang, FRG and Institut für Allgemeine Biochemie und Ludwig-Boltzmann-Forschungsstelle für Biochemie, Währingerstr. 38, A-1090 Wein, Austria

关键词: Cyanelle DNA;    Chloroplast DNA;    Cyanophora paradoxa;    Inverted repeat;    Intramolecular recombination;   

DOI  :  10.1016/0014-5793(82)80777-1

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The DNA of cyanelles which are described as endosymbiotic cyanobacteria from Cyanophora paradoxa (strain LB555UTEX) is equivalent to 127 kilobasepairs. It is characterized by two inverted repeat segments, 10 kilobasepairs in size, which are separated from each other by long single-copy DNA segments of unequal size. This morphology of the chromosome is also found in the chloroplast DNA of most higher plants and some green algae. The cyanelle DNA exists in two forms of circular molecules which differ only in the orientation of the two single-copy DNA segments relative to each other. This is likely due to intramolecular recombination within the inverted repeat segments.

【 授权许可】

Unknown