Identification of an RNA sequence within an intracisternal-A particle element able to replace Rev-mediated posttranscriptional regulation of human immunodeficiency virus type 1.
Human immunodeficiency virus type 1 (HIV-1) replication depends on the posttranscriptional regulation by the viral Rev protein and can be replaced with the posttranscriptional RNA control element (CTE) of the type D simian retroviruses. We have identified a sequence which shares only nucleotide sequences of the internal loops and secondary structure with the CTE and which is part of a novel murine intracisternal-A particle (IAP) retroelement, inserted within the transcribed mouse osteocalcin-related gene. This sequence, named CTE(IAP), can replace the Rev-mediated regulation of HIV-1, hence it is a posttranscriptional regulatory element. Related elements have been identified in other IAPs. These results suggest that insertional mutagenesis can affect gene expression by providing a functional posttranscriptional control element. The CTE(IAP) and CTEs of the type D simian retroviruses represent a novel class of RNA elements characterized by unique sequences within the internal loops which are predicted to represent the interaction site with cellular factor(s). These findings suggest that such elements may be involved in posttranscriptional regulation of cellular mRNAs.
Tabernero
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Human Retrovirus Pathogenesis Group, National Cancer Institute-Frederick Cancer Research and Development Center, Frederick, Maryland 21702-1201, USA.
Zolotukhin
A S
AS
Bear
J
J
Schneider
R
R
Karsenty
G
G
Felber
B K
BK
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002461:Cell Line, Transformed; D016208:Databases, Factual; D015967:Gene Expression Regulation, Viral; D015694:Gene Products, rev / Q000235:genetics*; D007426:Genes, Intracisternal A-Particle; D015497:HIV-1 / Q000235:genetics*; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D015675:Osteocalcin; D012313:RNA; D012323:RNA Processing, Post-Transcriptional; D012045:Regulatory Sequences, Nucleic Acid; D012689:Sequence Homology, Nucleic Acid; D054321:rev Gene Products, Human Immunodeficiency Virus
D015694:Gene Products, rev; D054321:rev Gene Products, Human Immunodeficiency Virus; D015675:Osteocalcin; D012313:RNA