Complex phylogenetic distribution of a non-canonical genetic code in green algae |
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| Authors: | Ellen Cocquyt Gillian H Gile Frederik Leliaert Heroen Verbruggen Patrick J Keeling Olivier De Clerck |
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| Institution: | 1.Phycology Research Group and Center for Molecular Phylogenetics and Evolution,Ghent University,Ghent,Belgium;2.Canadian Institute for Advanced Research, Department of Botany,University of British Columbia,Vancouver,Canada |
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| Abstract: | Background A non-canonical nuclear genetic code, in which TAG and TAA have been reassigned from stop codons to glutamine, has evolved
independently in several eukaryotic lineages, including the ulvophycean green algal orders Dasycladales and Cladophorales.
To study the phylogenetic distribution of the standard and non-canonical genetic codes, we generated sequence data of a representative
set of ulvophycean green algae and used a robust green algal phylogeny to evaluate different evolutionary scenarios that may
account for the origin of the non-canonical code. |
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