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M94A0296.TXT
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1994-10-08
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Document 0296
DOCN M94A0296
TI A functional interaction between Rev and yeast pre-mRNA is related to
splicing complex formation.
DT 9412
AU Stutz F; Rosbash M; Howard Hughes Medical Institute, Department of
Biology, Brandeis; University, Waltham, MA 02254.
SO EMBO J. 1994 Sep 1;13(17):4096-104. Unique Identifier : AIDSLINE
MED/94357183
AB The HIV-1 Rev protein regulates viral gene expression by enhancing the
export of partially spliced or nonspliced viral transcripts to the
cytoplasm. This activity is mediated by the interaction of Rev with a
highly structured viral RNA sequence, the Rev response element (RRE). In
this paper, Rev regulation has been recapitulated in the yeast
Saccharomyces cerevisiae. The data show that Rev enhances yeast pre-mRNA
translation in an RRE-dependent manner and requires intact RNA binding
and effector domains. In addition, reporter gene mutations in the 5'
splice site and in the branch point are epistatic to and eliminate Rev
responsiveness, i.e. some spliceosome assembly pathway steps precede a
functional interaction with Rev. The results indicate that some of the
Rev-interacting components are conserved between yeast and mammals and
suggest that Rev acts on yeast pre-mRNA in the context of the
spliceosome.
DE Biological Transport Cell Compartmentation DNA Mutational Analysis
Gene Products, rev/GENETICS/*METABOLISM Genes, Reporter
HIV-1/*GENETICS Metallothionein/GENETICS/METABOLISM Models, Genetic
Protein Binding Recombinant Fusion Proteins/METABOLISM RNA
Precursors/*METABOLISM *RNA Splicing Saccharomyces
cerevisiae/GENETICS/*METABOLISM Support, U.S. Gov't, P.H.S.
Translation, Genetic JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).