Abstract:
:There is a high degree of intraisolate sequence heterogeneity in the tax gene of human T-cell leukemia virus type I (HTLV-I), although the sequence variation between patients is small compared with that of human immunodeficiency virus type 1. In the present study, we investigated whether naturally occurring amino acid substitutions changed the properties of the Tax protein in two respects: first, recognition of the protein by cytotoxic T lymphocytes (CTL), and second, the ability of the Tax protein to transactivate various promoters. We found that (i) all of the observed amino acid substitutions that occur in known CTL epitopes abolished the recognition of the synthetic peptide representing the respective epitope; (ii) these substitutions occurred significantly more frequently in subjects carrying HLA-A2; and (iii) most of the amino acid substitutions severely reduced the ability of Tax protein to transactivate three promoters: the HTLV-I long terminal repeat, the c-fos promoter, and the interleukin-2 receptor alpha chain promoter.
journal_name
J Viroljournal_title
Journal of virologyauthors
Niewiesk S,Daenke S,Parker CE,Taylor G,Weber J,Nightingale S,Bangham CRdoi
10.1128/JVI.69.4.2649-2653.1995subject
Has Abstractpub_date
1995-04-01 00:00:00pages
2649-53issue
4eissn
0022-538Xissn
1098-5514journal_volume
69pub_type
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更新日期:2013-03-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.7.2967-2972.2000
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1985-09-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/JVI.53.1.40-43.1985
更新日期:1985-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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