Genetic analysis of homomeric interactions of human immunodeficiency virus type 1 integrase using the yeast two-hybrid system - PubMed (original) (raw)
Genetic analysis of homomeric interactions of human immunodeficiency virus type 1 integrase using the yeast two-hybrid system
G V Kalpana et al. Proc Natl Acad Sci U S A. 1993.
Abstract
The retroviral integrase protein (IN) is responsible for catalyzing a concerted integration reaction in which the two termini of linear viral DNA are joined to host DNA. To probe the potential for IN to form protein multimers, we used the yeast two-hybrid system. The coexpression of a GAL4 DNA binding domain-IN fusion and a GAL4 activation domain-IN fusion together resulted in the successful activation of a GAL4-responsive LacZ reporter gene. The system was used to examine a variety of IN deletion mutants. The results suggest that the central region of the protein is necessary for multimerization and that the N-terminal zinc finger region is not important.
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