Linked Life Data

9267454

Source:http://linkedlifedata.com/resource/pubmed/id/9267454

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1997-9-9
pubmed:databankReference
pubmed:abstractText
The nucleotide sequences of the genome segments A and B encoding the precursor polyprotein (NH2-VP2-VP4-VP3-COOH) and VP1 were determined for a highly virulent strain of infectious bursal disease virus (IBDV). The precursor polyprotein and VP1 coding regions of highly virulent OKYM strain consisted of 3039 nucleotides (1012 deduced amino acids) and 2640 nucleotides (879 deduced amino acids), respectively. Comparison of the deduced amino acid sequences of the highly virulent IBDV (HV-IBDV) with other serotype 1 and 2 sequences revealed 17 amino acid residues which were conserved only in the HV-IBDV. Among the 17 unique amino acid differences, 8 were in VP1, 4 were in VP2, 3 were in VP3 and 2 were in VP4. Although it is impossible to predict the effect of the unique amino acid residues without detailed knowledge of the three-dimensional structure and function of the proteins, they could affect the virulence of HV-IBDV. Alignment of the nucleic acid sequences of precursor polyprotein, VP1, VP2, VP3 and VP4 coding regions followed by distance analysis allowed the generation of phylogenetic trees. The same tree topology was obtained for the nucleotide sequence of precursor polyprotein, VP2, VP3 and VP4. On the other hand, the tree topology of VP1 was quite different from that obtained for the nucleotide sequence of precursor polyprotein, VP2, VP3 and VP4. These findings indicate that not a genetic recombination but a genetic reassortment may play an important role in the emergence of HV-IBDV.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0304-8608
pubmed:author
pubmed:issnType
Print
pubmed:volume
142
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1441-58
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Sequence and phylogenetic analyses of highly virulent infectious bursal disease virus.
pubmed:affiliation
Department of Veterinary Microbiology, Faculty of Agriculture, Gifu University, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't