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1996-02-27
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Document 0591
DOCN M9630591
TI Expression and purification of the HIV type 1 Rev protein produced in
Escherichia coli and its use in the generation of monoclonal antibodies.
DT 9603
AU Orsini MJ; Thakur AN; Andrews WW; Hammarskjold ML; Rekosh D; Department
of Biochemistry, University at Buffalo, New York; 14214, USA.
SO AIDS Res Hum Retroviruses. 1995 Aug;11(8):945-53. Unique Identifier :
AIDSLINE MED/96020095
AB We have developed a simple and rapid procedure for the purification of
large amounts of Rev protein overexpressed in E. coli. The purification
method, which does not require denaturation of the protein, takes
advantage of the positively charged nature of Rev and the ability of Rev
to interact with nucleic acids. The purified protein was used to develop
three novel murine monoclonal antibodies against Rev. Using fusion
proteins between glutathione S-transferase (GST) and various fragments
of the Rev protein, we mapped the specificity of these antibodies to
different regions of the Rev protein. One antibody, 3H6, is directed
against the nucleolar localization/RRE-binding domain of Rev between
amino acids 38 and 44. Another antibody, 3G4, recognizes an epitope
between amino acids 90 and 116 of Rev. A third antibody, 2G2, does not
recognize any of the fusion proteins, and may be directed against a
conformational epitope. All three antibodies are able to detect Rev on
Western blots and to immunoprecipitate Rev under native conditions.
However, only 3H6 and 3G4 immunoprecipitate Rev under denaturing
conditions and are able to detect Rev expressed in transfected cells by
indirect immunofluorescence. These antibodies should prove useful in
further studies of Rev function.
DE Antibodies, Monoclonal/*IMMUNOLOGY/ISOLATION & PURIF Base Sequence
Escherichia coli/GENETICS Gene Products,
rev/GENETICS/*IMMUNOLOGY/*ISOLATION & PURIF Human Molecular Sequence
Data Recombinant Fusion Proteins/GENETICS/IMMUNOLOGY/ISOLATION & PURIF
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).