Concerted action of multiple cis-acting sequences is required for Rev dependence of late human immunodeficiency virus type 1 gene expression.
Based on the human immunodeficiency virus type 1 (HIV-1) gag gene, subgenomic reporter constructs have been established allowing the contributions of different cis-acting elements to the Rev dependency of late HIV-1 gene products to be determined. Modification of intragenic regulatory elements achieved by adapting the codon usage of the complete gene to highly expressed mammalian genes resulted in constitutive nuclear export allowing high levels of Gag expression independent from the Rev/Rev-responsive element system and irrespective of the absence or presence of the isolated major splice donor. Leptomycin B inhibitor studies revealed that the RNAs derived from the codon-optimized gag gene lacking AU-rich inhibitory elements are directed to a distinct, CRM1-independent, nuclear export pathway.
Graf
M
M
Institute of Medical Microbiology and Hygiene, University of Regensburg, D-93053 Regensburg, Germany.
Bojak
A
A
Deml
L
L
Bieler
K
K
Wolf
H
H
Wagner
R
R
D001483:Base Sequence; D002467:Cell Nucleus / Q000378:metabolism; D015870:Gene Expression; D015683:Gene Products, gag / Q000138:chemical synthesis / Q000235:genetics / Q000378:metabolism; D015694:Gene Products, rev / Q000235:genetics / Q000378:metabolism*; D015497:HIV-1 / Q000235:genetics* / Q000378:metabolism*; D006801:Humans; D008969:Molecular Sequence Data; D021382:Protein Sorting Signals / Q000235:genetics*; D012326:RNA Splicing; D012333:RNA, Messenger / Q000378:metabolism; D014407:Tumor Cells, Cultured; D054321:rev Gene Products, Human Immunodeficiency Virus
D015683:Gene Products, gag; D015694:Gene Products, rev; D021382:Protein Sorting Signals; D012333:RNA, Messenger; D054321:rev Gene Products, Human Immunodeficiency Virus