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J. Moll. Stud. (1989), 55, 373-377
© The Malacological Society of London 1989

research-article

A COMPARATIVE STUDY OF THE PROTEIN COMPOSITION OF THE ALBUMEN GLAND OF TWO POPULATIONS OF BIOMPHALARIA GLABRATA (SAY) DIFFERING IN THEIR SUSCEPTIBILITY TO SCHISTOSOMA MANSONI (SAMBON).

C. HERBERTS*, J. de FRESCHEVILLE{dagger}, M. QUIGNON* and Y. J. GOLVAN*

*Service de Parasitologie C.H. U. Saint-Antoine, 27 rue de Chaligny, F 75571 Paris Cedex 12; and {dagger}Laboratoire de Zoologie, Université Pierre-et-Marie-Curie Batiment A, 4 place Jussieu, F 75252 Paris Cedex 05

An analysis of the protein composition of the albumen gland was performed on two strains of Biomphalaria glabrata; one of them was susceptible to infection by Schistosoma mansoni, the other less susceptible. The molecular weight, isoelectric point and chemical nature of these proteins were defined.

A specific protein observed in the glands from the less susceptible strain is a glycoprotein whose molecular weight is 800,000. This protein is composed of two fractions whose pI is 6.2 and ca. 4.8, respectively.

(Received 25 April 1988; accepted 17 August 1988)


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