home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9410p.zip
/
M94A3323.TXT
< prev
next >
Wrap
Text File
|
1994-10-25
|
2KB
|
39 lines
Document 3323
DOCN M94A3323
TI Identification of functional domains of HIV-1 integrase.
DT 9412
AU Kitamura Y; Coffin JM; Division of Molecular Genetics, National
Institute of Health,; Tokyo, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):102 (abstract no. PA0026). Unique
Identifier : AIDSLINE ICA10/94369252
AB Integration of a DNA copy of the viral RNA genome into host cellular DNA
is essential and unique to the retroviral life cycle. Following reverse
transcription, the 3' ends of the linear viral DNA are cleaved to expose
the CA-OH ends (processing reaction) that become joined to the target
DNA (strand transfer reaction). Purified integrase of several
retroviruses including HIV have been shown to carry out both the 3' end
processing and strand transfer reactions essential to integration. To
identify functional domains of HIV-1 integrase, we constructed several
chimera integrase genes; chimeras between HIV-1 and avian leukosis virus
(ALV). Then, those mutants genes were expressed in E. coli and purified.
When C-terminal half of the ALV integrase (just after DX35E domain) was
replaced with that of HIV-1, the mutant failed to carry out both the end
processing and strand transfer reactions. Although this region is
supposed to be a simple (non-specific) target DNA-binding domain, the
result implies that the region may have a role in retain a functional
structure and configuration of integrase protein in addition to
DNA-binding function. Result of integration activity assay of another
HIV-1 mutant, whose N-terminal 'HHCC' domain was replaced with that of
ALV, will also presented.
DE Binding Sites Cloning, Molecular DNA
Nucleotidyltransferases/GENETICS/*METABOLISM DNA-Binding
Proteins/GENETICS/METABOLISM Escherichia coli/GENETICS Genes, Viral
Human HIV-1/*ENZYMOLOGY/GENETICS In Vitro Leukosis Virus,
Avian/ENZYMOLOGY/GENETICS Mutagenesis Recombinant Fusion
Proteins/GENETICS/METABOLISM Virus Integration/GENETICS/PHYSIOLOGY
MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).