home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9410p.zip
/
M94A3296.TXT
< prev
next >
Wrap
Text File
|
1994-10-25
|
2KB
|
36 lines
Document 3296
DOCN M94A3296
TI Assembly of human immunodeficiency virus matrix protein.
DT 9412
AU Morikawa Y; Kishi T; Nermut M; Hockley D; Jones I; Kitasato Institute,
Tokyo, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):109 (abstract no. PA0056). Unique
Identifier : AIDSLINE ICA10/94369279
AB OBJECTIVE: To investigate the oligomeric state of p17 matrix protein
following expression in E. coli and recombinant baculoviruses. To
identify the residues involved in oligomerisation and gag assembly.
METHODS: p17 protein was expressed in E. coli and its oligomeric state
was examined in vitro. Site-directed mutagenesis was used to modify
cysteine residues in p17 and the mutant forms were similarly expressed
and characterised. p17 mutations were also expressed in baculoviruses
and their ability to assemble and secret antigen was assessed. RESULTS:
Wild type p17 protein was found as monomer to hexamer forms on
non-reducing SDS-PAGE. Mutations in either Cys57 to Ser or Cys87 to Ser
led to the production of only monomers and dimers. Mutations in both
residues prevented any oligomerisation. Expression of p17 in
baculoviruses also showed oligomeric assembly to hexamers and was
secreted. Cys mutations expressed in this system did not secret gag
antigen. DISCUSSION AND CONCLUSIONS: p17 protein assembles to hexameric
form via inter-subunit disulfide bond. The hexameric form may be the
basic unit of gag assembly that leads to virion formation.
DE Baculoviridae/GENETICS Escherichia coli/GENETICS Gene Expression Gene
Products, gag/CHEMISTRY/GENETICS/*METABOLISM Human HIV/GROWTH &
DEVELOPMENT/GENETICS/*METABOLISM HIV
Antigens/CHEMISTRY/GENETICS/*METABOLISM In Vitro Mutagenesis,
Site-Directed Protein Conformation Viral Matrix
Proteins/CHEMISTRY/GENETICS/*METABOLISM MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).