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Indian J Biochem Biophys. 2001 Aug;38(4):263-9.

Purification of vitellogenin from the plasma of Indian freshwater murrel, Channa punctatus (Bloch) by different methods: a comparative study.

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  • 1Department of Zoology, University of Delhi, India.


Plasma from estrogenized, [32P] NaH2PO4-injected murrel, Channa punctatus was collected in the presence of proteolytic inhibitors and subjected to different separation procedures singly or in combination, viz., gel filtration chromatography on Ultrogel AcA 34, ion-exchange chromatography on DEAE sephacel, or selective precipitation with dimethylformamide or with Mg2+: EDTA in order to isolate vitellogenin from other plasma proteins. The results show that chromatography on Ultrogel or DEAE sephacel yields intact vitellogenin whereas prior precipitation with DMF or with Mg2+: EDTA results in either co-precipitation of other plasma proteins or in the cleavage of phosvitin-like material from the native vitellogenin molecule.

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