Physical and genomic characteristics identify chicken proventricular necrosis virus (R11/3 virus) as a novel birnavirus.
Avian Dis
; 55(1): 2-7, 2011 Mar.
Article
en En
| MEDLINE
| ID: mdl-21500628
ABSTRACT
Chicken proventricular necrosis virus (CPNV), isolate R11/3, previously was isolated from transmissible viral proventriculitis-affected chickens and was determined to be the likely etiology of this disease. CPNV was identified as a birnavirus on the basis of virion size and morphology (icosahedral, approximately 75 nm in diameter, nonenveloped); buoyant density in cesium chloride (1.32 g/ml); a genome comprising bisegmented, double-stranded RNA (approximately 3.8 and 3.4 kilobase pairs); and nucleotide sequence analyses. Nucleotide sequencing of CPNV RNA, segment B, identified a single large open reading frame that encodes a 903-amino acid protein. The 903-amino acid protein was identified as the putative VP1, the viral RNA-dependent RNA polymerase (RdRp), on the basis of sequence homologies with other birnavirus VP1 proteins. The CPNV VP1 possessed the unique permuted RdRp sequence motif arrangement characteristic of birnaviruses; however, phylogenetic analyses based on VP1 demonstrated that CPNV is deeply divergent from other birnaviruses.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Aves de Corral
/
Pollos
/
Genoma Viral
/
Infecciones por Birnaviridae
/
Birnaviridae
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Avian Dis
Año:
2011
Tipo del documento:
Article
País de afiliación:
Estados Unidos