Molecular characterisation of the 3′-end of the astrovirus genome

Molecular characterisation of the 3′-end of the astrovirus genome We have sequenced the 3′-end of the RNA genomes of 14 serotyped and 12 untyped isolates of human astrovirus. The sequences, which include all 8 serotypes, were used to predict secondary structures, postulate possible functional domains, reveal conserved regions suitable for nucleic acid amplification and perform phylogenetic analysis. The final nucleotides of the capsid protein precursor gene and the adjacent 3′-noncoding region were highly conserved and, except for 35 nucleotides with homology to a sequence in the 3′-end of a coronavirus RNA genome, unique to astrovirus family. This confirms that the 3′-end is a suitable target for universal and specific detection of astrovirus RNA. For the deduced 72 C-terminal amino acids of the capsid protein precursor, distances between the serotypes were found to vary from 0.1 substitution per site between serotypes 3 and 7 to more than one substitution per site between serotype 4 and the other serotypes. Different isolates of the same serotype were closely related, which indicates that the presently used typespecific antibodies differentiate between phylogenetically distinct groups. RNA secondary structures with minimal free energy were predicted using computer programs. Comparative sequence analysis verified the significance of certain of the predicted structural elements. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Molecular characterisation of the 3′-end of the astrovirus genome

Loading next page...
 
/lp/springer_journal/molecular-characterisation-of-the-3-end-of-the-astrovirus-genome-YbXRWz550m
Publisher
Springer-Verlag
Copyright
Copyright © Wien by 1997 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050050112
Publisher site
See Article on Publisher Site

Abstract

We have sequenced the 3′-end of the RNA genomes of 14 serotyped and 12 untyped isolates of human astrovirus. The sequences, which include all 8 serotypes, were used to predict secondary structures, postulate possible functional domains, reveal conserved regions suitable for nucleic acid amplification and perform phylogenetic analysis. The final nucleotides of the capsid protein precursor gene and the adjacent 3′-noncoding region were highly conserved and, except for 35 nucleotides with homology to a sequence in the 3′-end of a coronavirus RNA genome, unique to astrovirus family. This confirms that the 3′-end is a suitable target for universal and specific detection of astrovirus RNA. For the deduced 72 C-terminal amino acids of the capsid protein precursor, distances between the serotypes were found to vary from 0.1 substitution per site between serotypes 3 and 7 to more than one substitution per site between serotype 4 and the other serotypes. Different isolates of the same serotype were closely related, which indicates that the presently used typespecific antibodies differentiate between phylogenetically distinct groups. RNA secondary structures with minimal free energy were predicted using computer programs. Comparative sequence analysis verified the significance of certain of the predicted structural elements.

Journal

Archives of VirologySpringer Journals

Published: Apr 1, 1997

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off