Human papillomavirus type 6: classification of clinical isolates and functional analysis of E2 proteins.

Human papillomavirus type 6: classification of clinical isolates and functional analysis of E2 proteins.
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人乳头瘤病毒6型:临床分离株的分类和E2蛋白的功能分析。

DOI:
10.1099/0022-1317-80-9-2445
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发表时间:
1999
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
Barbosa,MiguelS
Barbosa,MiguelS
中科院分区:
--
文献类型:
--
作者:
Kovelman,Robert;Bilter,GrahamK;Roman,Ann;Brown,DarronR;Barbosa,MiguelS

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人乳头瘤病毒 (HPV) 会引起多种临床表现,包括最流行的病毒性性传播疾病——尖锐湿疣。与任何其他 HPV 相比,在尖锐湿疣中发现的 HPV-6 数量更多。为了加深对HPV-6分离株之间结构和功能关系的了解,并为流行病学研究提供信息,测定了临床样本中HPV-6基因组E2、E6和E7编码区的序列。该序列分析是在对限制酶消化产生的模式进行分析的基础上,对最初指定为 HPV-6a 的分离株进行的。结果发现,基于限制酶消化的亚型指定与基于序列比较的亚型指定相关性较差;事实上,临床分离株明确分为 HPV-6a 和 HPV-6b 组,之前描述的 HPV-6vc 属于 HPV-6a 组的成员。还发现 HPV-6a E2 蛋白是比 HPV-16 E2 蛋白更弱的转录激活剂,将我们之前使用 HPV-6b E2 蛋白的结果推广到第二种 HPV-6 E2 蛋白。这些研究表明,在 HPV-6 E2 蛋白的这些天然变体之间观察到的氨基酸差异不会影响其功能。
Human papillomaviruses (HPVs) cause a variety of clinical manifestations, including the most prevalent viral sexually transmitted disease, genital warts. HPV-6 is found in a greater number of genital warts than any other HPV. To increase our understanding of the structural and functional relationships between HPV-6 isolates and to provide information for epidemiological studies, the sequences of the E2, E6 and E7 coding regions of HPV-6 genomes in clinical samples were determined. This sequence analysis was performed on isolates originally designated HPV-6a on the basis of analysis of patterns generated by restriction enzyme digestion. It was found that the designation of subtype on the basis of restriction enzyme digestion correlated poorly with the designation of subtype on the basis of sequence comparison; in fact, the clinical isolates were clearly categorized into HPV-6a and HPV-6b groups, with the previously described HPV-6vc being a member of the HPV-6a group. It was also found that the HPV-6a E2 protein is a much less potent activator of transcription than the HPV-16 E2 protein, generalizing our previous results with the HPV-6b E2 protein to this second HPV-6 E2 protein. These studies indicate that the amino acid differences observed between these natural variants of the HPV-6 E2 protein do not affect its function.
人乳头瘤病毒6型和16型L1和E7开放阅读框的核苷酸和氨基酸序列变异。
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