在人类内源性逆转录病毒中保存的蛋白质域的全面注释
Tomàs Montserrat-Ayuso1,2, Aurora Pujol3,4,5, Anna Esteve-Codina1,2
1Centre Nacional d'Anàlisi Genòmica (CNAG), Baldiri Reixac 4, 08028 Barcelona, Spain.
NAR genomics and bioinformatics
|February 11, 2026
概括
人体内源逆转录病毒 (HERVs) 含有未开发的蛋白质编码潜力. 这项研究对成千上万的HERVORF注释了保存域,揭示了大量的全长逆转录病毒域,特别是在HERVK (HML-2) 子家族中.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 人体内源逆转录病毒 (HERVs) 构成了人类基因组的很大一部分.
- 它们的蛋白质编码能力和功能域在很大程度上仍然未被描述.
- HERVs起源于古老的逆转录病毒生殖线感染,具有典型的前病毒结构.
研究的目的:
- 创建一个全面的资源,注释人类内源性逆转录病毒 (HERVs) 中保存的逆转录病毒域.
- 评估 HERV 衍生开放式读取框架 (ORF) 的结构保护和潜在的蛋白质编码能力.
- 提供开放访问数据,支持对HERV功能的进一步研究.
主要方法:
- 利用HMMER和InterProScan在超过12万个 HERV ORF中进行域注释.
- 分析了保存的逆转录病毒域,重点是GAG,POL和ENV基因.
- 量化域结构保护和识别的催化动机和跨膜特征.
主要成果:
- 确定了超过17000个保存的逆转录病毒域,主要是在多基因 (逆转录酶,RNase H,蛋白酶) 中.
- 在各种HERV家族中发现了大量的全长逆转录病毒类域,数百个显示>95%的对齐覆盖率.
- HERVK (HML-2) 子家族表现出最完整的多蛋白结构,其他子家族也保留了全长的多元域.
结论:
- HERVs对编码功能性蛋白质的潜力比以前被认为的要大.
- 该注释资源使HERV蛋白质的详细功能解释,包括催化和结构元素.
- 这种开放的数据资源有助于对HERV在免疫,疾病和细胞过程中的作用进行下游研究.
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