• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

Genetic analysis of nonstructural genes (NS1 and NS2) of H9N2 and H5N1 viruses recent

Mingus

Well-known member
<dl class="PubmedArticle" id="dlPubmedArticle17171546"><dt class="head" id="head17171546">1: Virus Genes. 2006 Dec 15; [Epub ahead of print]<script language="JavaScript1.2"> <!-- var PopUpMenu2_LocalConfig_jsmenu3Config = [ ["ShowCloseIcon","yes"], ["Help","window.open('/entrez/query/static/popup.html','Links_Help','resizable=no,scrollbars=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,copyhistory=no,alwaysRaised=no,depend=no,width=400,height=500');"], ["TitleText"," Links "] ] var jsmenu3Config = [ ["UseLocalConfig","jsmenu3Config","",""] ] //--> </script> <script language="JavaScript1.2"> <!-- var Menu17171546 = [ ["UseLocalConfig","jsmenu3Config","",""], ["Books","window.top.location='http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_AbstractPlus&cmd=Retrieve&db=pubmed&list_uids=17171546&dopt=Books'","",""] ] //--> </script> Links
</dt><dd class="abstract" id="abstract17171546">Genetic analysis of nonstructural genes (NS1 and NS2) of H9N2 and H5N1 viruses recently isolated in Israel.

Division of Avian and Aquatic Diseases, Kimron Veterinary Institute, P.O.B. 12, Beit Dagan, ZC, 50250, Israel, alexpan@moag.gov.il.
The avian influenza virus subtype H9N2 affects wild birds, domestic poultry, swine, and humans; it has circulated amongst domestic poultry in Israel during the last 6 years. The H5N1 virus was recorded in Israel for the first time in March 2006. Nonstructural (NS) genes and NS proteins are important in the life cycle of the avian influenza viruses. In the present study, NS genes of 21 examples of H9N2 and of two examples of H5N1 avian influenza viruses, isolated in Israel during 2000-2006, were completely sequenced and phylogenetically analyzed. All the H9N2 isolates fell into a single group that, in turn, was subdivided into three subgroups in accordance with the time of isolation; their NS1 and NS2 proteins possessed 230 and 121 amino acids, respectively. The NS1 protein of the H5N1 isolates had five amino acid deletions, which was typical of highly pathogenic H5N1 viruses isolated in various countries during 2005-2006. Comparative analysis showed that the NS proteins of the H9N2 Israeli isolates contained few amino acid sequences associated with high pathogenicity or human host specificity.
PMID: 17171546 [PubMed - as supplied by publisher]
</dd></dl>
 
Re: Genetic analysis of nonstructural genes (NS1 and NS2) of H9N2 and H5N1 viruses recent

no reassortment as reported earlier.

why NS ?
 
Re: Genetic analysis of nonstructural genes (NS1 and NS2) of H9N2 and H5N1 viruses recent

H5N1 H9N2 Bird Flu Reassortant Identified In Israel

Recombinomics Commentary
July 26, 2006

The H5N1 bird flu NS sequence from a turkey in Israel, A/turkey/Israel/345/06(H5N1) has been released. Although the other seven gene segments have not been released, the H5N1 sequence is clearly the Qinghai strain. It has several Qinghai specific polymorphisms as well as a 15 BP deletion that is one of the markers that defines in the Z genotype and is linked to increased virulence.

The sequence has three informative markers, C137T, C320T, and A584G which are also in A/turkey/Turkey/1/05(H5N1). The latter two markers are also in a number of Qinghai isolates, including the four human isolates from Turkey as well as 2005 isolates from Russia and Mongolia.

However, in addition to the one H5N1 sequence, 22 H9N2 NS sequences were also released. The collection dates ranged from 2000 to 2006. One of these 2006 sequences, A/turkey/Israel/446/06(H9N2), was an exact match of the H5N1 Israeli turkey sequence, indicating the H9N2 isolate was a reassortant formed via a dual infection between H5N1 and H9N2.

http://www.recombinomics.com/News/07260602/H5N1_H9N2_Israel_Reassortant.html
 
Back
Top