HAL1 (DF0000154)

L1 retrotransposon, HAL1 subfamily


HAL1 resembles half of a LINE1 element, as it encoded a protein closely related to LINE1 ORF1, but has no similarity to ORF2. The HAL1 3' end (position ~2300-2510) matches 3' UTRs of the oldest L1 subfamilies. The precise relationship between HAL1 and L1's is unresolved.


  1. Interspersed repeats and other mementos of transposable elements in mammalian genomes.
    Smit AF;
    Curr Opin Genet Dev 1999;9:657-663 Pubmed


Accession Name Wikipedia
Type Retrotransposon Article
Class LINE
Superfamily L1

Hit Statistics

The model is 2507 positions long. The average length of non-redundant hits to the model is 507.8. This table shows the number of hits above score thresholds:

Species Gathering Trusted
non-redundant all hits non-redundant all hits
Mus musculus 4540 45420 2572 35750
Homo sapiens 13088 85940 11108 66252

External Database Links

  • Repbase : HAL1 [Requires Repbase registration]