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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1990-11-16
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pubmed:abstractText |
Human T-lymphocytic cell line H9 infected with the HTLV-IIIB isolate of human immunodeficiency virus type 1 (HIV-1) synthesizes two forms of the Nef protein (p25 and p27) that differ both in molecular weight and charge. Different subpopulations of viruses were isolated from the HTLV-IIIB stock which induce expression of only p25 or p27. Cells infected with HIV-1 derived from the HXB3 clone of the HTLV-IIIB isolate made only the p25 species, whereas the 8E5/LAV cell line which harbors a single defective LAV provirus produces only the p27 species. These findings are consistent with the notion that the HTLV-IIIB isolate consists of at least two distinct variants with different nef genes, one specifying p25 and the other encoding p27. After a considerable number of passages in culture, H9 cells chronically infected with the HTLV-IIIB isolate produced high levels of p25 and lower levels of p27. Passages in culture appear to select for a subpopulation of virus variants that specify high levels of p25 Nef expression.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0042-6822
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
179
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
504-7
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:2219736-Cell Line,
pubmed-meshheading:2219736-Electrophoresis, Gel, Two-Dimensional,
pubmed-meshheading:2219736-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:2219736-Gene Products, nef,
pubmed-meshheading:2219736-HIV-1,
pubmed-meshheading:2219736-Humans,
pubmed-meshheading:2219736-Molecular Weight,
pubmed-meshheading:2219736-nef Gene Products, Human Immunodeficiency Virus
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pubmed:year |
1990
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pubmed:articleTitle |
Heterogeneity of Nef proteins in cells infected with human immunodeficiency virus type 1.
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pubmed:affiliation |
Nucleic Acid and Protein Synthesis Laboratory, Program Resources, Inc., NCI-Frederick Cancer Research and Development Center, Maryland 21702.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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