Identification and characterization of a type III Trichomonas vaginalis virus in the protozoan pathogen Trichomonas vaginalis

Identification and characterization of a type III Trichomonas vaginalis virus in the protozoan... A type III Trichomonas vaginalis virus, which may be involved in transcriptional regulation of the major surface protein gene P270 of the protozoan pathogen Trichomonas vaginalis , was purified and characterized in the present study. The complete 4844-base-pair complementary DNA sequence of the viral genome reveals overlapping cap and pol genes with a putative ribosomal frame-shifting signal within the overlap region. The type III virus is related more closely to the type II virus than to the type I virus in the sequence of its ribosomal frameshift signal and in its capsid protein. Phylogenetic analysis revealed that these viruses could be grouped in the same clade as a genus distantly related to other genera in the family Totiviridae . Virus-induced P270 gene expression was only evident in Trichomonas vaginalis cells infected with either a type II or type III virus, but not with a type I virus. These findings suggest that transcription of the P270 gene is likely regulated by viral factors common to type II and type III viruses and thus provides important information for future investigation of virus-host interactions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Identification and characterization of a type III Trichomonas vaginalis virus in the protozoan pathogen Trichomonas vaginalis

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Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-010-0858-y
Publisher site
See Article on Publisher Site

Abstract

A type III Trichomonas vaginalis virus, which may be involved in transcriptional regulation of the major surface protein gene P270 of the protozoan pathogen Trichomonas vaginalis , was purified and characterized in the present study. The complete 4844-base-pair complementary DNA sequence of the viral genome reveals overlapping cap and pol genes with a putative ribosomal frame-shifting signal within the overlap region. The type III virus is related more closely to the type II virus than to the type I virus in the sequence of its ribosomal frameshift signal and in its capsid protein. Phylogenetic analysis revealed that these viruses could be grouped in the same clade as a genus distantly related to other genera in the family Totiviridae . Virus-induced P270 gene expression was only evident in Trichomonas vaginalis cells infected with either a type II or type III virus, but not with a type I virus. These findings suggest that transcription of the P270 gene is likely regulated by viral factors common to type II and type III viruses and thus provides important information for future investigation of virus-host interactions.

Journal

Archives of VirologySpringer Journals

Published: Feb 1, 2011

References

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