Science. 1992 Feb 7;255(5045):723-6.

Reversal of integration and DNA splicing mediated by integrase of human immunodeficiency virus.

Chow SA, Vincent KA, Ellison V, Brown PO.

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Department of Pediatrics, Stanford University Medical Center, CA 94305.

Abstract

In retroviral integration, the viral integration protein (integrase) mediates a concerted DNA cleavage-ligation reaction in which the target DNA is cleaved and the resulting 5' ends of target DNA are joined to the 3' ends of viral DNA. Through an oligonucleotide substrate that mimics the recombination intermediate formed by this initial cleavage-ligation reaction, the purified integrase of human immunodeficiency virus was shown to promote the same reaction in reverse, a process called disintegration. Analysis of a set of structurally related substrates showed that integrase could promote a range of DNA cleavage-ligation reactions. When the viral DNA component of the disintegration substrate was single-stranded, integrase could mediate a DNA splicing reaction analogous to RNA splicing.

PMID:: 1738845; [PubMed - indexed for MEDLINE]

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