1887

Abstract

SUMMARY

By polyacrylamide gel electrophoresis, Duck/Mississippi/75 virus was shown to contain five different types of polypeptides of mol. wt. ranging from 76 × 10 to 43 × 10, two of which were glycosylated (mol. wt. 76 × 10 and 57 × 10). A comparison of this data with similar results obtained using Yucaipa and Newcastle disease virus (NDV) revealed a similarity with NDV, concerning the number, position and mol. wt. of the polypeptides. Haemagglutinating and neuraminidase properties are associated with surface glycoproteins which represent at least 40% of the virus protein. After KCl and Triton X-100 treatment and centrifugation on linear sucrose density gradients (10 to 25%, w/w) it was possible to isolate glycoprotein VP1 of mol. wt. 76 × 10 with which haemagglutinating and neuraminidase activities were associated.

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1979-05-01
2021-10-27
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