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- W4296706670 abstract "Pichia pastoris is an expression platform widely used for foreign protein expression, while it is unknown how the global lipid profiles changed during the cultivation process, which is crucial for fermentation optimization and chassis design. Therefore, this study aimed to reveal the diverse lipid profiles of P. pastoris controlled by constitutive promoter of glyceraldehyde-3-phosphate dehydrogenase gene and to unravel their change in the lag, logarithmic, stationary, and death phases, using ultra-performance liquid chromatography/nano-electrospray ionization-tandem mass spectrometry. Two hundred forty lipid species across 11 lipid classes were detected, including various glycerolipids, glycerophospholipids, and sphingolipids. Pichia cells displayed high diversity and variability of lipids in lipid profile, relative intensity, phosphatidylinositol/phosphatidylserine ratio, fatty acid chain length, and unsaturation degree. Notably, increase of unsaturated triacylglycerol level was accompanied by rise of malondialdehyde level under oxidative stress. The increased ceramide with long fatty acid chain could be a key feature at death phase. This work deepened our understanding of the physiology of P. pastoris during cultivation and provided valuable information for further improvement of the P. pastoris expression system." @default.
- W4296706670 created "2022-09-23" @default.
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- W4296706670 date "2022-12-01" @default.
- W4296706670 modified "2023-09-28" @default.
- W4296706670 title "Comparative lipidomics of <i>Pichia pastoris</i> using constitutive promoter reveals lipid diversity and variability at different growth phases" @default.
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- W4296706670 doi "https://doi.org/10.1139/cjm-2021-0385" @default.
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