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Mol Cell Biol. 1986 November; 6(11): 3734-3745

Variants of vaccinia virus hemagglutinin altered in intracellular transport.

ABSTRACT

Two classes of revertants were isolated from a vaccinia virus mutant whose hemagglutinins (HAs) accumulate on nuclear envelopes and rough endoplasmic reticulums. The HAs of one of the revertants had the same phenotype as the wild type, i.e., rapid and efficient movement to the cell surface. The HAs of the second class had biphasic transport: rapid export to the cell surface as in the wild type and slow movement to the medial cisternae of the Golgi apparatus. Biochemical and nucleotide sequence analyses showed that the HAs of all the mutants examined that have defects in transport from the rough endoplasmic reticulum to the Golgi apparatus have altered cytoplasmic domains and that the HAs of the second class of revertants lack the whole cytoplasmic domain, while the HAs of the first class of revertants have a wild-type cytoplasmic domain.

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