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M94A3168.TXT
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1994-10-25
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Document 3168
DOCN M94A3168
TI Analysis of Gag protein region involved in feline immunodeficiency virus
particle formation.
DT 9412
AU Morikawa S; Kitamura T; National Institute of Health, Tokyo, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):138 (abstract no. PA0171). Unique
Identifier : AIDSLINE ICA10/94369407
AB OBJECTIVE: To elucidate the functional domains required for proper
assembly to Gag precursor proteins of feline immunodeficiency virus
(FIV). METHODS: A variety of deletions were introduced within the FIV
gag gene. Several chimeric gag genes were constructed between FIV and
simian immunodeficiency virus (SIV). These recombinant genes were
expressed in insect cells by recombinant baculoviruses and analyzed
their potential to assemble into particles. RESULTS: 1) deletion of
either MA or NC proteins abolished particle formation of FIV Gag
precursor; 2) N'-terminal region including two Cys-His boxes of FIV NC
protein is necessary for assembly; 3) MA and NC protein regions of FIV
Gag precursor can be functionally replaced by corresponding regions of
SIV. DISCUSSION AND CONCLUSIONS: Two functional domains for the assembly
of FIV Gag precursor into particles has been identified. These domains
can be functionally complemented by corresponding domains of SIV. The
results suggest that the assembly domains of Gag is functionally
conserved among lentiviruses even though there is little amino acid
sequence homology in these domains.
DE Animal Baculoviridae Base Sequence Cell Line Chimera Comparative
Study Conserved Sequence Gene Products, gag/*BIOSYNTHESIS *Genes, gag
Immunodeficiency Virus, Feline/*GENETICS/PHYSIOLOGY Insects
Lentivirus/GENETICS Recombinant Proteins/BIOSYNTHESIS Recombination,
Genetic *Sequence Deletion SIV/*GENETICS/PHYSIOLOGY MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).