Purification And Characterization Of G. M. Morsitans Midgut Trypanolysin
Journal: International Journal of Scientific & Technology Research (Vol.5, No. 12)Publication Date: 2016-12-15
Authors : Mahamat H. Abakar; Mabel O.Imbuga; Ellie O.Osir; Hector G.Morgan;
Page : 116-121
Keywords : Characterization; G.m. morsitans; midgut; purification; trypanolysin.;
Abstract
In the present study a trypanolysin induced by component of blood meal in the midgut of tsetse G. m. morsitans was isolated and purified in three steps. The first step was achieved by separation of the midgut homogenate on a conventional anion-exchange chromatography column. The highest trypanolysin activity was recovered in the bound fractions 95 05 M NaCl. In the second step isolation was achieved on a Mono Q anion-exchange column by elution at 70-80 1 M NaCl. The third step of isolation-purification was achieved by using epoxy-activated Sepharose 6-B-affinity chromatography column. In this case the trypanolysin was eluted using 20 mM Tris-HCl. The purified native G. m. morsitans trypanolysin was of Mw 268776 669 kDa while 268776 14 kDa trypanolysin was shown in denaturing trypanolysin SDS-PAGE gel for the same tsetse species. It was noticed that the purified trypanolysin was lipidated and also found to be glycosylated.
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