home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9406b.zip
/
M9460162.TXT
next >
Wrap
Text File
|
1994-06-12
|
2KB
|
34 lines
Document 0162
DOCN M9460162
TI Identification of an HIV-1 Nef peptide that binds to HLA class II
antigens.
DT 9408
AU Torres BA; Johnson HM; Department of Microbiology and Cell Science,
University of; Florida, Gainesville 32611.
SO Biochem Biophys Res Commun. 1994 Apr 29;200(2):1059-65. Unique
Identifier : AIDSLINE MED/94234994
AB Overlapping peptides corresponding to the entire Nef (HIVBRU) sequence
were tested for their relative abilities to block binding of
staphylococcal enterotoxins (SEs) to Raji cells. An internal sequence,
Nef(123-160), blocked binding of two highly homologous SEs, SEA and SEE,
while it was less effective against SEB and SEC1. Nef(123-160) bound
directly class II DR antigens, as assessed by specific antibodies, and
its binding was significantly inhibited by SEE, and also by SEA to a
lesser degree. Purified Nef inhibited specific binding of SEA to Raji
cells in a dose-dependent manner. Nef induced IL 2 production and
proliferation by human mononuclear cells. Definitive expansion of
specific V beta T cell populations was not observed, possibly due to
lesser mitogenic activity of Nef relative to SEs. Thus, Nef may have
mitogenic activity similar to that of superantigens.
DE Amino Acid Sequence Binding Sites Binding, Competitive Cell Division
Cell Line Enterotoxins/METABOLISM Gene Products,
nef/GENETICS/*METABOLISM Human HIV-1/GENETICS/IMMUNOLOGY/*METABOLISM
HLA-D Antigens/*METABOLISM Interleukin-2/BIOSYNTHESIS Leukocytes,
Mononuclear/CYTOLOGY/IMMUNOLOGY/METABOLISM Molecular Sequence Data
Peptide Fragments/GENETICS/METABOLISM Superantigens Support, U.S.
Gov't, P.H.S. JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).