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M9610368.TXT
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1996-01-30
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Document 0368
DOCN M9610368
TI Analysis of cross reactivity of retrovirus proteases using a vaccinia
virus-T7 RNA polymerase-based expression system.
DT 9601
AU Luukkonen BG; Tan W; Fenyo EM; Schwartz S; Microbiology and Tumorbiology
Center, Karolinska Institute,; Stockholm, Sweden.
SO J Gen Virol. 1995 Sep;76 ( Pt 9):2169-80. Unique Identifier : AIDSLINE
MED/96005038
AB We have used the vaccinia virus-T7 RNA polymerase-based expression
system for studies on the activity of proteases from various
retroviruses on homologous and heterologous Gag polyproteins in
eukaryotic cells. Proteases from human immunodeficiency virus (HIV)
types 1 and 2, equine infectious anaemia virus, human T cell leukaemia
virus type 1 and human spumavirus were produced and were shown to cleave
their cognate Gag substrates produced in trans. Analysis of cross
reactivity revealed that lentivirus proteases cleaved only lentivirus
Gag proteins and oncovirus proteases acted primarily on oncovirus Gag
proteins. The HIV-2 protease cleaved the HIV-1 Gag precursor almost as
efficiently as HIV-1 protease. Expression of the 5' end of the human
spumavirus pol gene revealed that it encodes a functional protease that
acts specifically on the human spumavirus Gag polyprotein. This assay
will allow further investigation on the activity and specificity of
retrovirus proteases in eukaryotic cells.
DE Amino Acid Sequence Animal Base Sequence Gene Products,
gag/*METABOLISM Gene Products, pol Genetic Vectors Hela Cells Human
HIV/ENZYMOLOGY/GENETICS HTLV-I/ENZYMOLOGY/GENETICS Infectious Anemia
Virus, Equine/ENZYMOLOGY/GENETICS Molecular Sequence Data Peptide
Peptidohydrolases/GENETICS/*METABOLISM Recombinant Fusion
Proteins/GENETICS/METABOLISM Retroviridae/*ENZYMOLOGY/GENETICS RNA
Polymerases/GENETICS Spumavirus/ENZYMOLOGY/GENETICS Substrate
Specificity Support, Non-U.S. Gov't Vaccinia Virus/*GENETICS JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).