L1-3_DR (DF0003439)

L1-like non-LTR retrotransposon from zebrafish


L1-3_DR is a family of L1-like non-LTR retrotransposon. This family was active recently (no stop codons in protein sequences encoded by the genomic element) and could still be active. It encodes two proteins: 449-aa L1-3_DR1p (positions 214-1560) and 1279-aa L1-3_DR2p (positions 1565-5401). These proteins are most close to corresponding proteins encoded by other L1-like elements. L1-3_DR1p is a putative RNA/DNA binding protein, and L1-3_DR2p is composed of the AP endonuclease (aa positions 1-200) and reverse transcriptase domains. This is the same element as the Tx-like non-LTR retrotransposon family, MutsuDr3, specifically inserted into 5S ribosomal RNA genes [1].


  1. Cross-genome screening of novel sequence-specific non-LTR retrotransposons: various multicopy RNA genes and microsatellites are selected as targets.
    Kojima KK, Fujiwara H;
    Mol Biol Evol 2004;21:207-217. Pubmed


Accession Name Wikipedia
Type Retrotransposon Article
Class LINE
Superfamily L1-Tx1

Hit Statistics

The model is 5520 positions long. The average length of non-redundant hits to the model is 1222.5. This table shows the number of hits above score thresholds:

Species Gathering Trusted
non-redundant all hits non-redundant all hits
Danio rerio 65 1617 57 1151

External Database Links

  • Repbase : L1-3_DR [Requires Repbase registration]