Full-length sequence of a Canadian porcine reproductive and respiratory syndrome virus (PRRSV) isolate

Full-length sequence of a Canadian porcine reproductive and respiratory syndrome virus (PRRSV)... Presently, one of the most economically important pathogens affecting swine is the porcine reproductive and respiratory syndrome virus (PRRSV). This virus is prevalent in herds throughout the world and continues to pose a significant threat as newer and more virulent disease phenotypes emerge. In this report we describe the full-length nucleotide sequence of a Canadian PRRSV isolate, designated PA8. A consecutive sequence of 15,411 nucleotides was obtained from a set of overlapping cDNA clones. In order to determine the extent of genetic variation among isolates recovered from swine in Canada and the US, as well as to understand the molecular mechanisms governing the evolution of PRRSV, the full-length sequence of PA8 was compared with that of two US isolates, VR2332 and 16244B. The genomic sequence of PA8 shared 98.2% and 99.2% identity with 16244B and VR2332, respectively. The untranslated regions (UTR) at the 5′ and 3′ ends of the genome were very well conserved. Notable exceptions include an eight nucleotide difference at the 5′ end of the 5′ UTR of VR2332 relative to PA8 and 16244B and a two nucleotide difference in the 3′ UTR of PA8 relative to VR2332 and 16244B. In contrast to PA8 and VR2332, 16244B possessed two nucleotide differences within the RNA pseudoknot structure of the ribosomal frameshift region between open reading frame (ORF)1a and ORF1b. Amino acid differences were distributed throughout the genome, however they appeared to be most extensive in Nsp1β and ORF5 of the nonstructural and structural coding regions, respectively, suggesting that the evolutionary pressure to conserve these viral genes is somewhat lower. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Full-length sequence of a Canadian porcine reproductive and respiratory syndrome virus (PRRSV) isolate

Loading next page...
 
/lp/springer_journal/full-length-sequence-of-a-canadian-porcine-reproductive-and-3j06GtGTNz
Publisher
Springer-Verlag
Copyright
Copyright © Wien by 2000 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050070022
Publisher site
See Article on Publisher Site

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 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

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

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial