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The paper contains available data on the content, composition and metabolism of different lipid fractions in the nuclei. The results on physiological function of the nuclear lipids are also included. Nuclear phosphatidylinositols have been shown to play a role of messengers signalling from the cytoplasm to the nuclei. Most sphingomyeline is located in the nucleoplasm and it effect stability of DNA. A role of nuclear triacylglycerols remains unknown. Polyunsaturated long chain fatty acids control transcription of genes encoding lipogenic and glycolytic enzymes. Cholesterol present in the nuclear envelope plays probably only structural function, but that present in chromatin may be involved in regulation of cholesterol biosynthesis.
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