Abstract
Objectives
To elucidate the role of FSH1 (family of serine hydrolase) in lipid homeostasis.
Results
Proteins in various species containing alpha/beta hydrolase domain are known to be involved in lipid metabolism. In silico analysis of the FSH1 gene in Saccharomyces cerevisiae revealed the presence of alpha/beta hydrolase domain (ABHD) and a lipase motif (GXSXG), however its function in lipid metabolism remained elusive. The overexpression of FSH1 in WT and fsh1Δ cells showed a significant reduction in the cellular phospholipid levels and an increase in the triacylglycerol levels and lipid droplet (LD) number. Furthermore, the purified recombinant protein Fsh1p was identified as a lysophospholipase that specifically acts on lysophosphatidylserine (LPS) and impacts the lipid homeostasis in S. cerevisiae.
Conclusions
These results depicted that Fsh1p has a role on lipid homeostasis and is a lysophospholipase that hydrolyzes lysophosphatidylserine (LPS).
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Acknowledgements
The infrastructure facilities from DST-FIST, Department of Biochemistry, Life Sciences, and DST-PURSE program of Bharathidasan University Tamil Nadu, India is gratefully acknowledgment. We are thankful to Prof. Ram Rajasekharan CFTRI, India for providing yeast strains.
Supporting information
Supplementary Figure 1—Motif architecture, multiple sequence alignment, and Hydropathy plot of FSH1.
Supplementary Figure 2—Phospholipase activity in yeast Fsh1p.
Supplementary Figure 3—MAG, DAG and TAG lipase activity in purified Fsh1p.
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Designed the experiments VN and RG. RG, CR performed the experiments. RG, CR analyzed data. VN and RG wrote the manuscript. All the authors concluded the manuscript.
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Ramachandran, G., Chidambaram, R. & Nachiappan, V. FSH1 encodes lysophospholipase activity in Saccharomyces cerevisiae. Biotechnol Lett 43, 279–286 (2021). https://doi.org/10.1007/s10529-020-03004-x
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DOI: https://doi.org/10.1007/s10529-020-03004-x