Element:HMS-Beagle

From The Gypsy Database

Description

HMS-Beagle is a LTR retrotransposon described from sequencing data in the left arm of chromosome 2 of Drosophila melanogaster (Patel et al. 2001). This element belongs to the genus Errantiviridae (Boeke et al. 1999; Pringle 1998; 1999; Hull 1999), a lineage of fly-retroviruses and LTR retrotransposons closely related to 412/mdg1 clade (Tubio, Naveira and Costas 2005).The genomic structure of HMS-Beagle is 7 Kb in size including LTRs of 266 nt. The internal region of this element displays a Primer Binding Site for a tRNALys, two ORFs for gag, and pol genes, and a Polypurine Tract (PPT) adjacent to the 3´LTR (Patel et al. 2001).

Structure

Hms-beagle.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:AF365402
Clade:Gypsy
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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