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- 5DGAT
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- 4Linum usitatissimum
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- 145 Saccharomyces cerevisiae
- 9Agricultural, Food and Nutritional Science, Department of
- 9Agricultural, Food and Nutritional Science, Department of/Journal Articles (Agricultural, Food and Nutritional Science)
- 5Graduate and Postdoctoral Studies (GPS), Faculty of
- 5Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 1InSciTE & Science 100
- 1InSciTE & Science 100/Capstone Project Posters (Science 100)
- 1Oba, Masahito (Agricultural, Food, and Nutritional Science)
- 1Ozga, Jocelyn (Department of Agricultural, Food and Nutritional Science)
- 1Sauvageau, Dominic (Chemical and Materials Engineering)
- 1Simmen, Thomas (Cell biology)
- 1Stuart, David T. (Biochemistry)
- 1Weselake, Randall (Department of Agricultural, Food and Nutritional Science)
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Fall 2023
Lipids are integral components of all cells. Lipid molecules form the membrane and control membrane integrity while storage lipids act as a source of energy for the cell. The chemical properties of lipids are determined by the composition of the molecule’s acyl chain moieties. Incorporation of...
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Characterization of a Type‐2 Diacylglycerol Acyltransferase from Haematococcus pluvialis Reveals Possible Allostery of the Recombinant Enzyme
Download2019-12-26
Nguyen, Trinh, Xu, Yang, Abdel-Hameed, Mona, Sorensen, John L., Singer, Stacy D., Chen, Guanqun
Haematococcus pluvialis is a green microalga used in the algal biotechnology industry that can accumulate considerable amounts of storage triacylglycerol (TAG) and astaxanthin, which is a high‐value carotenoid with strong antioxidant activity, under stress conditions. Diacylglycerol...
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Characterization of Type-2 Diacylglycerol Acyltransferases in the Green Microalga Chromochloris zofingiensis
Download2018-12-13
Xu, Yang, Falarz, Lucas, Chen, Guanqun
Diacylglycerol acyltransferase (DGAT) catalyzes the last and committed step of the acyl-CoA-dependent TAG biosynthesis and thus is a key target for manipulating oil production in microalgae. The microalga Chromochloris zofingiensis can accumulate substantial amounts of triacylglycerol (TAG) and...
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Effects of nutritional management on production performance and rumen fermentation in dairy cows during calving transition
DownloadSpring 2019
Dairy cows usually experience negative energy balance during the calving transition period (3 weeks before to 3 weeks after parturition) due to the rapid increase in nutrient demands for milk production. In order to compensate for the energy deficits, diets rich in highly fermentable...
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Engineering Arabidopsis long-chain acyl-CoA synthetase 9 variants with enhanced enzyme activity
Download2018-12-17
Xu, Yang, Caldo, Kristian Mark P., Holic, Roman, Mietkiewska, Elzbieta, Ozga, Jocelyn, Rizvi, Syed Masood, Chen, Guanqun, Weselake, Randall
Long-chain acyl-CoA synthetase (LACS, EC 6.2.1.3) catalyzes the ATP-dependent activation of free fatty acid to form acyl-CoA, which in turn serves as the major acyl donor for various lipid metabolic pathways. Increasing the size of acyl-CoA pool by enhancing LACS activity appears to be a useful...
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Engineering Enhanced Performance in Plant Diacylglycerol Acyltransferase and Long-Chain Acyl-CoA Synthetase
DownloadSpring 2018
Triacylglycerol (TAG) is the major storage lipid in higher plants and has great nutritional and industrial value. Plant storage lipid biosynthesis involves different subcellular compartments and a complex network of enzymes and proteins. Among them, endoplasmic reticulum (ER)-bound diacylglycerol...
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Heterologous expression of flax PHOSPHOLIPID:DIACYLGLYCEROL CHOLINEPHOSPHOTRANSFERASE (PDCT) increases polyunsaturated fatty acid content in yeast and Arabidopsis seeds
Download2015
Weselake, Randall J., Mietkiewska, Elzbieta, Pan, Xue, Singer, Stacy D., Siloto, Rodrigo M. P., Wickramarathna, Aruna D.
Background Flax (Linum usitatissimum L.) is an agriculturally important crop with seed oil enriched in α-linolenic acid (18:3 cisΔ9, 12, 15; ALA). This polyunsaturated fatty acid (PUFA) is the major determinant for the quality of flax seed oil in food, nutraceuticals and industrial applications....
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Improving the production of punicic acid in baker’s yeast by engineering genes in acyl channeling processes and adjusting precursor supply
Download2021-01-01
Wang, Juli, Xu, Yang, Holic, Roman, Yu, Xiaochen, Singer, Stacy D., Chen, Guanqun
ABSTRACT Punicic acid (PuA) is a high-value edible conjugated fatty acid with strong bioactivities and has important potential applications in nutraceutical, pharmaceutical, feeding and oleochemical industries. Since the production of PuA is severely limited by the fact that its natural source...
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Mammalian and Saccharomyces cerevisiae ER-mitochondria contact site regulation by small Rab GTPases and ER folding assistants
DownloadFall 2021
Membrane-bound organelles allow eukaryotes to compartmentalize components and processes in a highly organized manner. Organelles can communicate with one another through membrane contact sites (MCS): membrane appositions 10-50nm apart. MCS were not widely accepted as bona fide sites of organelle...