Element:Mag

From The Gypsy Database

Description

Mag is a LTR retrotransposon characterized in the genome of Bombyx mori (Michaille et al. 1990). Mag gives the name and belongs, along with other LTR retrotransposons, to Mag a large Ty3/Gypsy cluster widely distributed in both protostomes and deuterostomes (for more details, see Malik and Eickbush 1999; Volff et al. 2001; Tubio, Naveira and Costas 2004). The genomic structure of Mag is 4.6Kb in size including LTRs of 77 nt. The internal region of this element displays a Primer Binding Site (PBS) complementary to a tRNASer, two Open Reading Frames (ORFs) for gag, and pol genes, and a Polypurine Tract (PPT) adjacent to the 3' LTR (Michaille et al. 1990).

Structure

Mag.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

Mobile DNA II. (Craig et al. 2002)

Genbank accession:X17219
Clade:A-clade
Cluster or genus:Mag
Branch or class:Branch 2
Family:Ty3/Gypsy
System:LTR retroelements
Host:
Explore the Tree Life Project
Bombyx mori.jpg
Bombyx mori
Image, Laura Covelli,
Copyright, GyDB, Biotech Vana
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