Element:Tv1

Description Tv1 is a retrovirus described in Drosophila virilis (Andrianov and Shuppe 1994). Tv1 belongs to the genus Errantiviridae (Boeke et al. 1999; Pringle 1998; 1999; Hull 1999), a lineage of fly-retroviruses and LTR retrotransposons phylogenetically related to 412/mdg1 clade (Tubio, Naveira and Costas 2005). The genomic structure of Tv1 is 6.8Kb in size including LTRs of 453 nt. The internal region displays a Primer Binding Site (PBS) complementary to a tRNASer, three Open Reading Frames (ORFs) for gag, pol, and env genes, and a small epigenetic ORF between the integrase and env, and the Polypurine Tract (PPT) adjacent to the 3´LTR (Andrianov et al. 1999). Structure Figure not to scale. If present, long terminal repeats (LTRs) have been highlighted in blue. Amino acid motifs noted with lines indicate the conserved residues in each protein domain, abbreviations below mean: MA=matrix PR=protease DU or DUT=dUTPase TM=transmembrane TAV or IBMP=transactivator/viroplasmin or inclusion body matrix protein CA=capsid RT=reverse transcriptase INT=Integrase CHR=chromodomain NC=nucleocapsid RH=RNaseH SU=surface MOV=movement protein PPT=polypurine tract PBS=primer binding site ATF=aphid transmission factor VAP=virion associated protein Related literature Mobile DNA II. (Craig et al. 2002)

Genbank accession: AF056940 Clade: 17.6 Cluster or genus: Errantiviridae Branch or class: Branch 2 Family: Ty3/Gypsy System: LTR retroelements Host: Explore the Tree Life Project Drosophila virilis Image, courtesy of Thomas Kaufman, Flybase Browse all elements