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M9650555.TXT
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1996-03-09
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Document 0555
DOCN M9650555
TI Analysis and localization of cyclophilin A found in the virions of human
immunodeficiency virus type 1 MN strain.
DT 9605
AU Ott DE; Coren LV; Johnson DG; Sowder RC 2nd; Arthur LO; Henderson LE;
AIDS Vaccine Program, National Cancer Institute, Frederick Cancer;
Research and Development Center, Maryland 21702-1201, USA.
SO AIDS Res Hum Retroviruses. 1995 Sep;11(9):1003-6. Unique Identifier :
AIDSLINE MED/96089206
AB Previous reports have shown that cyclophilin A (CyPA) is found to be
specifically associated with human immunodeficiency virus type-1 (HIV-1)
virions and is required for infectivity (Franke et al. Nature 372:359;
Thali et al. Nature 372:363). We have examined CyPA associated with
HIV-1MN virions. Virions from infected human lymphoid cells were
analyzed by high-pressure liquid chromatography (HPLC), protein
sequence, and immunoblot analysis. At least three forms of CyPA were
found: an unmodified form, an N-terminally modified form, and an
N-terminally modified form that migrates as a larger isoform on a
reducing-SDS polyacrylamide gel. Using a protease digestion procedure,
CyPA that is associated with virions was found to be located inside the
viral membrane. Similar examination of SIVMne produced by HUT-78 human T
cells did not detect specific incorporation of CyPA into SIV virions.
Our results are consistent with the role of CyPA acting early in the
infectious process of HIV-1.
DE Amino Acid Isomerases/*ANALYSIS/CHEMISTRY/METABOLISM Amino
Acids/ANALYSIS Carrier Proteins/*ANALYSIS/CHEMISTRY/METABOLISM Cell
Line Chromatography, High Pressure Liquid Human
HIV-1/*CHEMISTRY/GROWTH & DEVELOPMENT/METABOLISM Immunoblotting
Subtilisins Support, U.S. Gov't, P.H.S. Viral Envelope
Proteins/ANALYSIS/METABOLISM JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).