imported>Gydbwiki at 15:28, 17 March 2010

2010-03-17T15:28:19Z

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{{Element
|genbank=[http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=189009869 189009869]
|type=
|genus=Caulimovirus
|subfamily=Class 1
|family=Caulimoviridae
|group=LTR retroelements
|description=''Eupatorium vein clearing virus'' (EVCV) is a plant pararetrovirus found in ''Eupatorium'' ornamental plants species, a genus of herbaceous perennial plants belonging to ''Asteraceae'' family, which was proposed to be a putative ''Caulimovirus''-like member ([http://www.ncbi.nlm.nih.gov/nuccore/189009869 Zhang ''et al.'' 2008], unpublished) of the ''Caulimoviridae'' family (''International Committee on the Taxonomy of Viruses'' -ICTV- [[Literature:100589|Fauquet ''et al''. 2005]]). This is a perspective clearly supported by phylogenetic analyses inferred based on the COAT(GAG) and pol protein domains ([[Literature:100596|Llorens ''et al'' 2009]]).

EVCV virions are composed of a genomic circular double-stranded DNA (8463 bp long) encoding for six Open reading frames (ORFs) whose size and organization are similar to those of known caulimoviruses ([http://www.ncbi.nlm.nih.gov/nuccore/189009869 Zhang ''et al.'' 2008], unpublished). The aminoacids sequences of the potentially predicted protein products show similarities to those encoded by the corresponding ORFs of known Caulimoviruses. ORF I encodes the putative movement protein (MOV), ORF II and ORF III are similar to the "aphid transmission factor" (ATF) and "virion associated protein" (VAP), respectively. ORF IV encodes the putative COAT protein and contains the "RNA-binding" motif characteristic of the ''Caulimoviridae'' COAT (Gag-like) domain (C-X-C-X2-C-X4-H-X4-C ) ([[Literature:8054|Bouhida ''et al.'' 1993]];[[Literature:100605|Hull 1996]]; [[Literature:100596|Llorens ''et al'' 2009]]). ORF V product is a polyprotein displaying the typical ''Pol'' domains -aspartic protease (PR), reverse transcriptase (RT) and RNase H (RH) – and ORF VI encodes a putative "Translational transactivator protein" (TAV) ([http://www.ncbi.nlm.nih.gov/nuccore/189009869 Zhang ''et al.'' 2008], unpublished). A short intergenic region is present between ORFs V (''Pol'') and VI (TAV) as observed in the genome of other Caulimovirus-like species such as LLDAV. A second larger intergenic region is downstream to the ORF VI. In both cases the regions are rich in several stop codons.
|structure=EVCV.png
|structure_legend=(MOV=ORF I; ATF=ORF II; VAP=ORF III; COAT(''Gag'')=ORF IV; POL=ORF V; TAV=ORF VI; solid line=untranslated region)
|host=Eupatorium spp.
|hostpic=Eupatorium_spp.jpeg
|literature=
|picowner=[http://es.wikipedia.org/wiki/Archivo:Eupatorium_cv2.jpg Image from Wikipedia, courtesy of Kenpei author]
}}
[[Category:Element]]

Element:EVCV - Revision history

imported>Gydbwiki at 15:28, 17 March 2010