Element:297

From The Gypsy Database

Description

297 is a retrovirus characterized in Drosophila melanogaster (Potter et al. 1979; Inouye, Yuki and Saigo 1986). 297 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 297 is 7 Kb in size including LTRs of 414 nt, both LTRs present sequences for hogness box promoters. 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 Polypurine Tract (PPT) adjacent to the 3´LTR. (Inouye, Yuki and Saigo 1986).

Structure

297.png


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

Genbank accession:X03431
Clade:17.6
Cluster or genus:Errantiviridae
Branch or class:Branch 2
Family:Ty3/Gypsy
System:LTR retroelements
Host:
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Drosophila melanogaster.gif
Drosophila melanogaster
Image, courtesy of Andreas Trepte, Max-Planck Institute for Molecular Genetics
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