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Removal of endotoxin from protein solutions by phase separation using triton X-114

โœ Scribed by Yoshitomi Aida; Michael J. Pabst


Book ID
118011418
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
359 KB
Volume
132
Category
Article
ISSN
0022-1759

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Removal of endotoxin from protein soluti
โœ Yoshitomi Aida; Michael J. Pabst ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 359 KB

Endotoxin contamination of protein solutions was reduced by a phase separation technique using the detergent, Triton X-114. Protein solutions containing endotoxin were treated with Triton X-114 on ice. The solution was then warmed to 37ยฐC, whereupon two phases formed. The Triton X-114 phase, contain

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Rat intestinal microvillus membrane contains at least 24 polypeptides, of which 18 can be solubilized using Triton X-114 at 4 degrees C. Upon phase separation at 32 degrees C, 11 proteins separated nearly completely into the detergent-rich phase, while 9 proteins were found exclusively in the aqueou

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Triton X-114 solutions separate above 22 degrees C into two immiscible aqueous phases. The more dense phase is enriched in detergent, and the less dense phase is depleted of detergent, relative to the original single phase. This phenomenon has been used to partition proteins according to hydrophobic