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FEBS Lett. 1995 May 29;365(2-3):141-5.

Rev-dependency of expression of human immunodeficiency virus type 1 gag and env genes.

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Institute for Virus Research, Kyoto University, Japan.


Structural gene expression of human immunodeficiency virus type 1 (HIV-1) requires a viral regulatory protein, Rev transactivator. We investigated Rev-dependency of HIV-1 gene expression by various reporter systems. Expression of unspliced and single-spliced viral mRNAs was demonstrated to be differentially dependent on the Rev function. This difference of Rev-dependency was found not to be determined by cis-elements in gag, pol, and env coding sequences reported so far, and was lost when the reporter constructs containing minimum elements for Rev-responsiveness such as splice signals and rev responsive element were used for experiments. These findings indicated that the fundamental structure of HIV-1 mRNA was critical for the differential regulation of gene expression by Rev transactivator.

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