Solubilization and Purification of trans-Farnesyl Pyrophosphate-Squalene Synthetase
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چکیده
منابع مشابه
Isoprenoid enzyme systems of silkworm. I. Partial purification of isopentenyl pyrophosphate isomerase, farnesyl pyrophosphate synthetase, and geranylgeranyl pyrophosphate synthetase.
Isopentenyl pyrophosphate isomerase, farnesyl pyrophosphate synthetase, and geranylgeranyl pyrophosphate synthetase were detected in cell-free extracts of Bombyx mori and were partially purified by hydroxyapatite and Sephadex G-100 chromatography. Two forms of farnesyl pyrophosphate synthetase were chromatographically separated. They were designated as farnesyl pyrophosphate synthetases I and I...
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A trans-farnesyl pyrophosphate-squalene synthetase has been isolated in a soluble form from yeast extracts and purified 45fold. The molecular weight of the enzyme estimated from sucrose density gradient centrifugation and gel filtration chromatography is 426,000. Solubilization of the squalene synthetase is achieved with deoxycholate. Treatment with the detergent markedly lowers squalene synthe...
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Rat hepatic microsomal squalene synthetase (EC 2.5.1.21) was induced 25-fold by feeding rats with diet containing the hydroxymethylglutaryl-coenzyme A reductase inhibitor, fluvastatin, and cholestyramine, a bile acid sequestrant. A soluble squalene synthetase protein with an estimated mass of 32-35 kDa, as determined by gel filtration chromatography on Sephacryl S-200 column, was solubilized ou...
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The intermediate, discovered by Rilling, between farnesyl pyrophosphate and squalene was synthesized in milligram quantities with yeast subcellular particles from farnesylJ4Cpyrophosphate and from farnesyl-l-3H&4C-pyrophosphate. The 3H : l4C ratio in the new squalene precursor was found to be identical with that in the farnesyl pyrophosphate, whereas the ratio in squalene was close to the expec...
متن کاملPurification and properties of phosphoribosyl pyrophosphate synthetase from rat liver.
Phosphoribosyl pyrophosphate synthetase has been purified extensively from rat liver. Gel filtration studies indicate that the enzyme is a complex of large molecular weight. On electron microscopy, stacking of enzyme molecules into long, linear aggregates is observed. The subunit molecular weight is 40,500, as measured by disc gel electrophoresis in sodium dodecyl sulfate. MgATP appears to be t...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1971
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)45830-4