Genomic and molecular evolutionary analysis of a newly identified infectious agent (SEN virus) and its relationship to the TT virus family

被引：148

作者：

Tanaka, Y

Primi, D

Wang, RYH

Umemura, T

Yeo, AET

Mizokami, M

Alter, HJ

Shih, JWK

机构：

[1] NIH, Warren G Magnuson Clin Ctr, Dept Transfus Med, Bethesda, MD 20892 USA

[2] Diasorin, Saluggia, Italy

[3] Nagoya City Univ, Sch Med, Dept Med 2, Nagoya, Aichi 467, Japan

来源：

JOURNAL OF INFECTIOUS DISEASES | 2001年 / 183卷 / 03期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1086/318091

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

A new group of transmissible single-stranded (ss) DNA viruses (SENV) distantly related to the large TT virus (TTV) family was recently identified. Eight different SENV isolates have been found, some with an association with posttransfusion hepatitis. A phylogenetic analysis of near-complete open-reading frame 1, including conserved motifs and excluding recombinant regions, was performed. The analysis used TTV-like minivirus as an outgroup, to determine a root of the phylogenetic tree, and compared 8 SENV isolates, 6 prototype TTV isolates, and 7 TTV variants (including SANBAN, TUS01, PMV, and YONBAN). Four distinct clusters separated by a bootstrap value of 100% were observed. YONBAN isolates formed a distinct outer group, representing the earliest recognized phylogenetic divergence (group 1). Prototype TTV formed group 2, PMV formed group 3, and SENV, SANBAN, and TUS01 isolates formed group 4, the most recently evolved group. This taxonomic classification suggests that these circular ssDNA viruses probably evolved from a common ancestor virus.

引用

页码：359 / 367

页数：9

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