| Literature DB >> 12867657 |
Aurora Ortín1, Christina Cousens2, Esmeralda Minguijón1, Zoraida Pascual1, Maider Pérez de Villarreal1, J Michael Sharp2, Marcelo De Las Heras1.
Abstract
The complete genome sequence of a new isolate of enzootic nasal tumour virus (ENTV-2), associated with enzootic nasal adenocarcinoma (ENA) of goats, was determined. The genome exhibits a genetic organization characteristic of beta-retroviruses. ENTV-2 is closely related to the retrovirus (ENTV-1) associated with enzootic adenocarcinoma of sheep, and to jaagsiekte retrovirus. The main sequence differences between these viruses reside in orfX, the U3 LTR, two small regions in gag and the transmembrane (TM) region of env. Sequence analysis of the TM region of env from several sheep and goats naturally affected by ENA suggested that ENTV-1 and ENTV-2 are distinct viruses rather than geographical variants. Although both viruses transform secretory epithelial cells of the ethmoid turbinate, the study of their tissue distribution using specific PCRs showed that ENTV-2 establishes a disseminated lymphoid infection whereas ENTV-1 is mainly confined to the tumour.Entities:
Mesh：
Year: 2003 PMID： 12867657 DOI： 10.1099/vir.0.19125-0
Source DB: PubMed Journal: J Gen Virol ISSN： 0022-1317 Impact factor: 3.891