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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Печать: 1521-9429
ISSN Онлайн: 1940-4328

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International Journal on Algae

DOI: 10.1615/InterJAlgae.v18.i1.10
pages 5-20

Evolution of the Circadian Clock System in Cyanobacteria: A Genomic Perspective

V. Dvornyk
College of Science and General Studies, Alfaisal University, Al Maather, Riyadh, Kingdom of Saudi Arabia

Краткое описание

Cyanobacteria are the first prokaryotes shown to have an endogenous circadian clock; an ability to sustain life processes with an approximate daily periodicity. During its long and complex evolutionary history, the circadian system of cyanobacteria has undergone several major changes, which resulted in its structural diversification. Three main types of the system that possess different sets of elements have been identified so far. There is evidence that these differences may be associated with some functional modifications. Macroevolution of the circadian system has been governed by many factors including multiple duplications, gene recruitment and de novo gene origin, domain accretion and fusion, and selection. Rapid accumulation of genomic data provides new possibilities for comprehensive comparative analyses and more accurate reconstruction of an evolutionary scenario for this finely tuned regulatory mechanism of cyanobacteria.

Ключевые слова: cyanobacteria, circadian system, evolution, genomics

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