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- W4366978222 endingPage "107789" @default.
- W4366978222 startingPage "107789" @default.
- W4366978222 abstract "Actin gene family is a divergent and ancient eukaryotic cellular cytoskeletal gene family, and participates in many essential cellular processes. Ciliated protists offer us an excellent opportunity to investigate gene family evolution, since their gene families evolved faster in ciliates than in other eukaryotes. Nonetheless, actin gene family is well studied in few model ciliate species but little is known about its evolutionary patterns in ciliates. Here, we analyzed the evolutionary pattern of eukaryotic actin gene family based on genomes/transcriptomes of 36 species covering ten ciliate classes, as well as those of nine non-ciliate eukaryotic species. Results showed: (1) Except for conventional actins and actin-related proteins (Arps) shared by various eukaryotes, at least four ciliate-specific subfamilies occurred during evolution of actin gene family. Expansions of Act2 and ArpC were supposed to have happened in the ciliate common ancestor, while expansions of ActI and ActII may have occurred in the ancestor of Armophorea, Muranotrichea, and Spirotrichea. (2) The number of actin isoforms varied greatly among ciliate species. Environmental adaptability, whole genome duplication (WGD) or segmental duplication events, distinct spatial and temporal patterns of expression might play driving forces for the variation of isoform numbers. (3) The 'birth and death' model of evolution could explain the evolution of actin gene family in ciliates. And actin genes have been generally under strong negative selection to maintain protein structures and physiological functions. Collectively, we provided meaningful information for understanding the evolution of eukaryotic actin gene family." @default.
- W4366978222 created "2023-04-27" @default.
- W4366978222 creator A5000845924 @default.
- W4366978222 creator A5046188481 @default.
- W4366978222 creator A5062377553 @default.
- W4366978222 creator A5063989146 @default.
- W4366978222 date "2023-07-01" @default.
- W4366978222 modified "2023-10-13" @default.
- W4366978222 title "Four ciliate-specific expansion events occurred during actin gene family evolution of eukaryotes" @default.
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- W4366978222 doi "https://doi.org/10.1016/j.ympev.2023.107789" @default.
- W4366978222 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37105243" @default.
- W4366978222 hasPublicationYear "2023" @default.