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1996-02-27
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Document 0077
DOCN M9630077
TI Identification of a hexapeptide inhibitor of the human immunodeficiency
virus integrase protein by using a combinatorial chemical library.
DT 9603
AU Puras Lutzke RA; Eppens NA; Weber PA; Houghten RA; Plasterk RH; Division
of Molecular Biology, The Netherlands Cancer Institute,; Amsterdam, The
Netherlands.
SO Proc Natl Acad Sci U S A. 1995 Dec 5;92(25):11456-60. Unique Identifier
: AIDSLINE MED/96102132
AB Integration of human immunodeficiency virus (HIV) DNA into the human
genome requires the virus-encoded integrase (IN) protein, and therefore
the IN protein is a suitable target for antiviral strategies. To find a
potent HIV IN inhibitor, we screened a synthetic peptide combinatorial
library. We identified a hexapeptide with the sequence HCKFWW that
inhibits IN-mediated 3'-processing and integration with an IC50 of 2
microM. The peptide is active on IN proteins from other retroviruses
such as HIV-2, feline immunodeficiency virus, and Moloney murine
leukemia virus, supporting the notion that a conserved region of IN is
targeted. The hexapeptide was also tested in the disintegration
reaction. This phosphoryl-transfer reaction can be carried out by the
catalytic core of IN alone, and the peptide HCKFWW was found to inhibit
this reaction, suggesting that the hexapeptide acts at or near the
catalytic site of IN. Identification of an IN hexapeptide inhibitor
provides proof of concept for the approach, and, moreover, this peptide
may be useful for structure-function analysis of IN.
DE Amino Acid Sequence Comparative Study Drug Screening DNA
Nucleotidyltransferases/*ANTAGONISTS & INHIB Enzyme
Inhibitors/*PHARMACOLOGY HIV-1/*ENZYMOLOGY/GENETICS HIV-2/DRUG
EFFECTS/ENZYMOLOGY/GENETICS Immunodeficiency Virus, Feline/DRUG
EFFECTS/GENETICS Molecular Sequence Data Moloney Leukemia Virus/DRUG
EFFECTS/ENZYMOLOGY/GENETICS Oligopeptides/CHEMICAL
SYNTHESIS/*PHARMACOLOGY Retroviridae/DRUG EFFECTS/ENZYMOLOGY/GENETICS
Structure-Activity Relationship Support, Non-U.S. Gov't Virus
Integration/*DRUG EFFECTS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).