Processing and secretion of human immunodeficiency virus glycoprotein,gp120.

Yan. Li
The natural signal sequence of HIV-1 gp120 contains an unusually long hydrophobic domain and five positively charged amino acids. When the gp120 gene was cloned into a baculovirus expression vector under the control of the baculovirus polyhedrin gene promoter, it exhibited an extremely low level of secretion. However, deletion of the signal sequence resulted in the production of large quantities of a nonglycosylated form of gp120 and fusion of honeybee melittin or murine interleukin 3...
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