In:
Journal of Virology, American Society for Microbiology, Vol. 66, No. 2 ( 1992-02), p. 1139-1151
Abstract:
The significance and location of sequence-specific information in the CAR/RRE, the target sequence for the Rev protein of the human immunodeficiency virus type 1 (HIV-1), have been controversial. We present here a comprehensive experimental and computational approach combining mutational analysis, phylogenetic comparison, and thermodynamic structure calculations with a systematic strategy for distinguishing sequence-specific information from secondary structural information. A target sequence analog was designed to have a secondary structure identical to that of the wild type but a sequence that differs from that of the wild type at every position. This analog was inactive. By exchanging fragments between the wild-type sequence and the inactive analog, we were able to detect an unexpectedly extensive distribution of sequence specificity throughout the CAR/RRE. The analysis enabled us to identify a critically important sequence-specific region, region IIb in the Rev-binding domain, strongly supports a proposed base-pairing interaction in this location, and places forceful constraints on mechanisms of Rev action. The generalized approach presented can be applied to other systems.
Type of Medium:
Online Resource
ISSN:
0022-538X
,
1098-5514
DOI:
10.1128/jvi.66.2.1139-1151.1992
Language:
English
Publisher:
American Society for Microbiology
Publication Date:
1992
detail.hit.zdb_id:
1495529-5
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