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M9651050.TXT
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1996-03-30
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Document 1050
DOCN M9651050
TI Identification of a clinical isolate of HIV-1 with an isoleucine at
position 82 of the protease which retains susceptibility to protease
inhibitors.
DT 9505
AU King RW; Winslow DL; Garber S; Scarnati HT; Bachelor L; Stack S; Otto
MJ; DuPont Merck Pharmaceutical Company, Glenolden, PA 19036, USA.
SO Antiviral Res. 1995 Sep;28(1):13-24. Unique Identifier : AIDSLINE
MED/96105494
AB The HIV-1 protease (PR) is essential for the production of mature
virions. As such, it has become a target for the development of anti-HIV
chemotherapeutics. Multiple passages of virus in cell culture in the
presence of PR inhibitors have resulted in the selection of variants
with decreased sensitivity to inhibitors of the PR. The most common
alteration observed is a single amino acid change at position 82. This
particular position has been well characterized by several laboratories
as being important for the susceptibility of the virus to inhibitors of
PR function. Mutations which result in the substitution of the wild-type
valine with alanine, phenylalanine, threonine or isoleucine at position
82 of the PR have been associated with decreased sensitivity to several
PR inhibitors. We describe here a clinical strain of HIV-1 that contains
an isoleucine at position 82 of the PR instead of the usual valine. This
strain is unique in that it was isolated from a patient that was
anti-retroviral naive, and in the past, variants at position 82 of the
PR have only been found after treatment of patients or cell culture with
PR inhibitors. Moreover, this virus remains sensitive to PR inhibitors
of the cyclic urea and C-2 symmetrical diol classes.
DE Amino Acid Sequence Base Sequence Binding Sites Cell Line DNA, Viral
Genes, Viral Human HIV Protease/*CHEMISTRY/DRUG EFFECTS/GENETICS HIV
Protease Inhibitors/*PHARMACOLOGY HIV-1/DRUG EFFECTS/*ENZYMOLOGY/GROWTH
& DEVELOPMENT/ISOLATION & PURIF *Isoleucine Male Molecular Sequence
Data Recombination, Genetic Sequence Homology, Nucleic Acid
Structure-Activity Relationship Thailand Tumor Cells, Cultured
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).