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Proc Natl Acad Sci U S A. 1998 Mar 17;95(6):2828-33.

A genetic screen for the isolation and characterization of site-specific proteases.

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1
Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Building 4-Room 133, 9000 Rockville Pike, Bethesda, MD 20892, USA.

Abstract

Site-specific proteolysis is an important regulatory mechanism in basic cellular and viral processes. Using the protease of the HIV as a model, a genetic system has been developed for the isolation and characterization of site-specific proteases. The system utilizes the well defined bacteriophage lambda regulatory circuit where the viral repressor, cI, is specifically cleaved to initiate the lysogenic-to-lytic switch. The model system is rapid, highly specific, and demonstrates the ability to isolate and characterize enzymes of limited expression or activity. In addition, the system has a significant potential for the selection of clinically relevant mutant enzymes and in the development of anti-protease therapeutics.

PMID:
9501175
PMCID:
PMC19654
[Indexed for MEDLINE]
Free PMC Article
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