Quasispecies of TT Virus (TTV) with Sequence Divergence in Hypervariable Regions of the Capsid Protein in Chronic TTV Infection

Author:

Nishizawa Tsutomu1,Okamoto Hiroaki1,Tsuda Fumio2,Aikawa Tatsuya3,Sugai Yoshiki4,Konishi Keiko5,Akahane Yoshihiro6,Ukita Masato1,Tanaka Takeshi7,Miyakawa Yuzo8,Mayumi Makoto1

Affiliation:

1. Immunology Division and Division of Molecular Virology, Jichi Medical School, Tochigi-Ken 329-0498,1

2. Department of Medical Sciences, Toshiba General Hospital, Tokyo 140-8522,2

3. Aikawa Internal Hospital, Ibaraki-Ken 310-0851,3

4. Department of Internal Medicine, Iwaki Kyoritsu General Hospital, Fukushima-Ken 973-8402,4

5. Department of Clinical Pathology, Kanazawa National Hospital, Ishikawa-Ken 920-0935,5

6. First Department of Internal Medicine, Yamanashi Medical University, Yamanashi-Ken 409-3898,6

7. Japanese Red Cross Saitama Blood Center, Saitama-Ken 338-0001,7 and

8. Miyakawa Memorial Research Foundation, Tokyo 107-0062,8 Japan

Abstract

ABSTRACT Three hypervariable regions were identified in a central portion of open reading frame 1 of TT virus DNA, which codes for a putative capsid protein of 770 amino acids. TT virus circulates as quasispecies, with many amino acid substitutions in hypervariable regions, to evade immune surveillance of the hosts and to establish a persistent infection.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

Reference29 articles.

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2. Hypervariable regions in the putative glycoprotein of hepatitis C virus;Hijikata M.;Biochem. Biophys. Res. Commun.,1991

3. Equilibrium centrifugation studies of hepatitis C virus: evidence for circulating immune complexes

4. Detection of sequences of TT virus, a novel DNA virus, in German patients;Hohne M.;J. Gen. Virol.,1998

5. ODEN: a program package for molecular evolutionary analysis and database search of DNA and amino acid sequences;Ina Y.;Comput. Appl. Biosci.,1994

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