Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41598-019-46869-3
Title: Gains and losses of metabolic function inferred from a phylotranscriptomic analysis of algae
Authors: Goh, Falicia Qi Yun 
Jeyakani, Justin
Tipthara, Phornpimon
Cazenave-Gassiot, Amaury 
Ghosh, Rajoshi
Bogard, Nicholas 
Yeo, Zhenxuan
Wong, Gane Ka-Shu
Melkonian, Michael
Wenk, Markus R 
Clarke, Neil D 
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
ISOPRENOID BIOSYNTHESIS
EVOLUTION
MEVALONATE
PATHWAYS
ORIGINS
Issue Date: 19-Jul-2019
Publisher: NATURE PUBLISHING GROUP
Citation: Goh, Falicia Qi Yun, Jeyakani, Justin, Tipthara, Phornpimon, Cazenave-Gassiot, Amaury, Ghosh, Rajoshi, Bogard, Nicholas, Yeo, Zhenxuan, Wong, Gane Ka-Shu, Melkonian, Michael, Wenk, Markus R, Clarke, Neil D (2019-07-19). Gains and losses of metabolic function inferred from a phylotranscriptomic analysis of algae. SCIENTIFIC REPORTS 9 (1). ScholarBank@NUS Repository. https://doi.org/10.1038/s41598-019-46869-3
Abstract: © 2019, The Author(s). Hidden Markov models representing 167 protein sequence families were used to infer the presence or absence of homologs within the transcriptomes of 183 algal species/strains. Statistical analyses of the distribution of HMM hits across major clades of algae, or at branch points on the phylogenetic tree of 98 chlorophytes, confirmed and extended known cases of metabolic loss and gain, most notably the loss of the mevalonate pathway for terpenoid synthesis in green algae but not, as we show here, in the streptophyte algae. Evidence for novel events was found as well, most remarkably in the recurrent and coordinated gain or loss of enzymes for the glyoxylate shunt. We find, as well, a curious pattern of retention (or re-gain) of HMG-CoA synthase in chlorophytes that have otherwise lost the mevalonate pathway, suggesting a novel, co-opted function for this enzyme in select lineages. Finally, we find striking, phylogenetically linked distributions of coding sequences for three pathways that synthesize the major membrane lipid phosphatidylcholine, and a complementary phylogenetic distribution pattern for the non-phospholipid DGTS (diacyl-glyceryl-trimethylhomoserine). Mass spectrometric analysis of lipids from 25 species was used to validate the inference of DGTS synthesis from sequence data.
Source Title: SCIENTIFIC REPORTS
URI: https://scholarbank.nus.edu.sg/handle/10635/170464
ISSN: 20452322
DOI: 10.1038/s41598-019-46869-3
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