Kabuki is a LTR retrotransposon inserted in the chromosome W of the silkworm Bombyx mori. This element is part of a nested structure containing at least seven mobile genetic elements. Kabuki is inserted into another element (Bm1) and also contains two elements inserted in its internal region (FUI and Yokozuna) (Abe et al. 2000). Kabuki belongs to CsRN1 clade (Bae et al. 2001; Tubio, Naveira and Costas 2005). The full-length consensus for this element is 13 Kb in size, including LTRs of 131 and 184 nt. The internal region of this element displays a Primer Binding Site (PBS) complementary to a tRNATrp, an Open Reading Frame (ORF) for a gag-pol gene, element insertions, as well as a Polypurine Tract (PPT) adjacent to the 3´LTR (Abe et al. 2000).



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: AB032718 (nuc: 5510-18073)
Clade: CsRN1
Cluster or genus: Undetermined
Branch or class: Branch 2
Family: Ty3/Gypsy
System: LTR retroelements
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Bombyx mori.jpg
Bombyx mori
Image, Laura Covelli,
Copyright, GyDB, Biotech Vana
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Welcome to the Gypsy Database (GyDB) an open editable database about the evolutionary relationship of viruses, mobile genetic elements (MGEs) and the genomic repeats where we invite all authors to contribute with their knowledge to improve and expand the topics.
Cite this project:

Llorens, C., Futami, R., Covelli, L., Dominguez-Escriba, L., Viu, J.M., Tamarit, D., Aguilar-Rodriguez, J. Vicente-Ripolles, M., Fuster, G., Bernet, G.P., Maumus, F., Munoz-Pomer, A., Sempere, J.M., LaTorre, A., Moya, A. (2011) The Gypsy Database (GyDB) of Mobile Genetic Elements: Release 2.0 Nucleic Acids Research (NARESE) 39 (suppl 1): D70-D74 doi: 10.1093/nar/gkq1061

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