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. 1996 Apr;70(4):2598–2604. doi: 10.1128/jvi.70.4.2598-2604.1996

Nonspecific alcoholysis, a novel endonuclease activity of human immunodeficiency virus type 1 and other retroviral integrases.

M Katzman 1, M Sudol 1
PMCID: PMC190108  PMID: 8642692

Abstract

Retroviral integrase (IN) exhibits a previously unrecognized endonuclease activity which we have termed nonspecific alcoholysis. This action occurred at every position in nonviral DNA sequences except those near 5' ends and is clearly distinguished from, and was not predicted by, the site-specific alcoholysis activity previously described for IN at the processing site near viral DNA termini. The integrases of human immunodeficiency virus type 1, visna virus, and Rous sarcoma virus exhibited different target site preferences in this new assay. The isolated central domain of human immunodeficiency virus type 1 IN preferred the same sites as the full-length protein. Nonspecific alcoholysis may provide insights into the structure and function of IN and other endonucleases and suggests that stimulators of some activities possessed by retroviral enzymes should be sought as antiviral agents.

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Selected References

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