Preparation and characterization of antisera to electrophoretically purified SA11 virus polypeptides.

Infection and Immunity
J W BastardoI H Holmes

Abstract

Antisera to SA11 virus proteins were prepared by immunizing rabbits with individual polypeptides separated by polyacrylamide gel electrophoresis under reducing or nonreducing conditions; the resulting antisera were characterized by four immunological methods. Results of complement fixation tests with double-shelled rotavirus particles and sera raised against reduced or unreduced proteins of the outer shell of the virus suggested the presence of common antigenic determinants in the outer capsid layers of SA11 and the Northern Ireland strain of calf rotavirus. In this test, antisera to outer shell polypeptides gp34 (O2) and gp25 (O4) cross-reacted with calf rotavirions, whereas those to p62 (O1) and p26 (O3) reacted only with the homologous virus. Antisera to the reduced outer shell proteins of the virus did not neutralize viral infectivity, nor did they possess hemagglutination inhibition activity. Evidence suggesting the presence of type-specific antigenic determinant(s) in the major inner protein p42 (I4) of SA11 virus, capable of inducing neutralizing antibody, is presented and discussed. Antisera produced against unreduced gp34 and p26 polypeptides of the virus contained type-specific neutralizing antibodies. Polypeptide gp3...Continue Reading

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Citations

Jul 1, 1992·Journal of Medical Virology·O SethabutrP Echeverria
Jan 1, 1986·Archives of Virology·S C RichardsonI H Holmes
Jan 1, 1991·Archives of Virology·F SupertiG Donelli
Jan 1, 1987·Archives of Virology·J CaustI H Holmes
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