Identification of a variant B-specific neutralizing epitope on glycoprotein H of human herpesvirus-6.

Identification of a variant B-specific neutralizing epitope on glycoprotein H of human herpesvirus-6.
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人类疱疹病毒 6 糖蛋白 H 上变体 B 特异性中和表位的鉴定。

DOI:
10.1099/0022-1317-78-9-2171
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发表时间:
1997
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
K. Yamanishi
K. Yamanishi
中科院分区:
--
文献类型:
--
作者:
K. Takeda;M. Haque;T. Sunagawa;T. Okuno;Y. Isegawa;K. Yamanishi

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我们已经鉴定了人疱疹病毒6型变异体B(HHV-6 B)糖蛋白H(gH)上的特异性中和表位,其被单克隆抗体(MA B)OHV 3识别,具有补体非依赖性中和活性。来自HHV-6A(菌株U1102)和HHV-6 B(菌株HST)的HHV-6 gH在T7-牛痘病毒瞬时表达系统中表达。在免疫沉淀试验和间接免疫荧光试验中,OHV 3与HST gH反应,但不与U1102 gH反应。此外,OHV 3与U1102 gH和HST gH之间形成的嵌合gH反应,所述嵌合gH含有HST gH的氨基酸272至422。U1102和HST的序列比较显示,在该区域有7个氨基酸的差异。将位点特异性突变引入这些位置,然后研究针对OHV 3的反应性。HST gH第389位的精氨酸被证明是OHV 3的HHV-6 B特异性反应性的决定因素。
We have identified the human herpesvirus-6 variant B (HHV-6B)-specific neutralizing epitope on glycoprotein H (gH) which is recognized by monoclonal antibody (MAb) OHV3, with complement-independent neutralizing activity. HHV-6 gHs from HHV-6A (strain U1102) and HHV-6B (strain HST) were expressed in a T7-vaccinia virus transient expression system. OHV3 reacted with HST gH, but not with U1102 gH, in an immunoprecipitation assay and an indirect immunofluorescence assay. In addition, OHV3 reacted with chimeric gHs, formed between U1102 gH and HST gH, containing amino acids 272 to 422 of HST gH. Sequence comparison between U1102 and HST showed seven amino acid differences in this region. Site-specific mutations were introduced into these positions and then reactivity against OHV3 was investigated. The arginine at position 389 of HST gH was shown to be a determinant of the HHV-6B-specific reactivity of OHV3.
DOI: 10.1006/viro.1993.1272
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影响因子: 3.7
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