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. 1990 Mar;64(3):1410–1413. doi: 10.1128/jvi.64.3.1410-1413.1990

A temperature-sensitive mutant of Newcastle disease virus defective in intracellular processing of fusion protein.

H Matsumura 1, Y Futaesaku 1, S Kohno 1, A Sugiura 1, M Kohase 1
PMCID: PMC249268  PMID: 2304149

Abstract

A temperature-sensitive mutant (ts3) of Newcastle disease virus was physiologically characterized. All major viral structural proteins were synthesized at the permissive (37 degrees C) and nonpermissive (42 degrees C) temperatures, but the fusion (F) glycoprotein was not cleaved at 42 degrees C. In immunocytochemical electron microscopy, the F protein was abundant in the rough endoplasmic reticulum but not in cytoplasmic membrane at 42 degrees C. Noninfectious hemagglutinating virus particles containing all major structural proteins except the F protein were released at 42 degrees C from infected cells. We concluded that the defect in ts3 resides in the intracellular processing of the F protein.

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Selected References

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