Specific binding of human immunodeficiency virus type 1 (HIV-1) Gag-derived proteins to a 5' HIV-1 genomic RNA sequence.
We developed an in vitro binding assay to study the specific interaction between human immunodeficiency virus type 1 (HIV-1) RNA and the Gag polyprotein. Binding of the in vitro-expressed protein to in vitro-transcribed RNA was determined by altered migration of the protein in polyacrylamide gels. We found that a Gag precursor lacking the matrix domain bound specifically to HIV-1 RNA, while deletion of both matrix and capsid domains diminished the specificity of binding. Among several regions of HIV-1 RNA tested, strongest binding was seen with the 5'-most 261 nucleotides, while antisense RNA from the same region did not bind.
Geigenmüller
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Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington 98104, USA.
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ML
D000818:Animals; D017353:Gene Deletion; D015683:Gene Products, gag / Q000235:genetics / Q000378:metabolism*; D016679:Genome, Viral; D015497:HIV-1 / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D011485:Protein Binding; D012367:RNA, Viral / Q000378:metabolism*; D013329:Structure-Activity Relationship
D015683:Gene Products, gag; D012367:RNA, Viral