Antigen-specific nonimmunoglobulin factor that neutralizes xenotropic virus is associated with mouse serum lipoproteins.
Author(s) -
JoAnn C. Leong,
John P. Kane,
O Oleszko,
Jay A. Levy
Publication year - 1977
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.74.1.276
Subject(s) - ultracentrifuge , antibody , chemistry , antigen , virus , virology , microbiology and biotechnology , biology , biochemistry , immunology
A soluble nonimmunoglobulin factor that specifically neutralizes mouse xenotropic C-type virus is found in normal mouse sera. It is stable from pH 2 to neutrality and resists ether extraction, freezing, or brief heating to 100 degrees. It can be separated from immunoglobulins by ultracentrifugation at a density of 1.21 g/cm3. Neutralizing activity is only found with the serum lipoproteins in the fraction with density less than 1.21 g/cm3.
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