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- W2005249136 abstract "A rapid purification method of rotavirus particles to high yield retaining the double shelled structure of infectious virus is described. Group A rotavirus (UK strain) was concentrated through a cushion of colloidal silica (rho=1.10 g/cm(3)) or by precipitating with polyethylene glycol 8000. After concentration, infectious rotavirus was cleared from host cell proteins by density equilibrium centrifugation in gradients of colloidal silica using near vertical rotors. Characterisation of purified virus assessed by electron microscopy and poliacrylamide gel electrophoresis (PAGE) revealed the typical wheel shape structure of rotavirus particles and the presence of the 11 segments of dsRNA arranged in the 4-2-3-2 pattern. Presence of rotavirus structural proteins including VP6, VP4 and VP7 from the outer shell, was demonstrated by SDS-PAGE and Western blot using polyclonal and VP6-specific monoclonal antibodies. This method achieved a approximately 1500 fold purification, which retained approximately 80% infectivity depending on the concentration protocol used, while yielding 160 microg of viral protein per each litre of infected cell culture medium. The time required for the isopycnic centrifugation was only 25 min and the entire completion of the method required 3.5 h. The method is simple technically and applicable to the purification of large as well as minute amounts of virus." @default.
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- W2005249136 date "2002-06-01" @default.
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- W2005249136 title "A rapid method to produce high yields of purified rotavirus particles" @default.
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- W2005249136 doi "https://doi.org/10.1016/s0166-0934(02)00020-4" @default.
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