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- W2041472783 abstract "Rhodococcus erythropolis strain ST-2 emulsified and grew on crude oil as sole carbon and energy source. The emulsifying agent was produced constitutively in the absence of oil and was associated with the cell surface. Emulsifying activity was proportional to cell density and unaffected by autoclaving, air drying at 50 °C, or lyophilization. Lysozyme treatment diminished emulsification activity by more than 50%, but protein-digesting enzymes had no effect on activity. Treatment of whole cells with 8 M urea yielded cell-free extracts of the emulsifying polymer. Chemical analysis revealed the polymer to be about 73% protein, 27% carbohydrate. When the extracted polymer was treated with lysozyme a 30 kDa protein was precipitated. The extracted glycoprotein exhibited only moderate surface-tension reduction of water, and reached a critical concentration at about 0.04 mg/ml. The strain ST-2 glycoprotein polymer apparently is noncovalently bound to the cell surface and has peptidoglycan-like structural components critical for emulsifying activity." @default.
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- W2041472783 date "1997-11-01" @default.
- W2041472783 modified "2023-09-23" @default.
- W2041472783 title "Emulsification of Crude Oil by Rhodococcus erythropolis Strain ST-2 via a Cell-Surface, Lysozyme-Sensitive Glycoprotein" @default.
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- W2041472783 doi "https://doi.org/10.1016/s0723-2020(97)80024-0" @default.
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