Zebel is a LTR retrotransposon found in the zebrafish Danio rerio (Llorens et al. 2009). Its name is an acronym derived from “Zebrafish Bel/Pao element”. Zebel element belongs to the Pao clade (Copeland et al. 2005) within Branch 2 of the Bel/Pao family (Llorens et al. 2009).
The genome of Zebel is 7584 bp in lenght, including LTRs of 701 nt. The internal region of this LTR retrotransposon displays a single ORFs of 2033 amino acids showing the typical gag and pol protein domains of LTR retrotransposons (Llorens et al. 2009).
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:
|DU or DUT=dUTPase
|TAV or IBMP=transactivator/viroplasmin or inclusion body matrix protein
|PBS=primer binding site
|ATF=aphid transmission factor
|VAP=virion associated protein