MER21A (DF0000739)

MER21A (Long Terminal Repeat) for ERVL endogenous retrovirus


MER21A is a member of a closely related group of LTRs including: MER34, MER39, LTR29, LTR48 and LTR49. Has 4 bp TSDs. Note that MER stands for MEdium Reiteration frequency interspersed repeat. As such, MERs as a group are a grab bag of DNA transposons and retrotransposons.


  1. Medium reiteration frequency repetitive sequences in the human genome.
    Kaplan DJ, Jurka J, Solus JF, Duncan CH;
    Nucleic Acids Res 1991;19:4731-4738 Pubmed


Accession Name Wikipedia
Type Retrotransposon Article
Class LTR Article
Superfamily ERVL Article

Hit Statistics

The model is 931 positions long. The average length of non-redundant hits to the model is 472. This table shows the number of hits above score thresholds:

Species Gathering Trusted
non-redundant all hits non-redundant all hits
Homo sapiens 1477 14786 1339 11645

External Database Links

  • Repbase : MER21A [Requires Repbase registration]