CACTA elements are Class 2 transposons.
They are well characterised in plants. Abundant in higher plants..
The terminal repeats usually end in CACTA (5' end) and TAGTG (3' end).
Upon insertion, they create a 3 bp Target site duplication (TSD).
TIR5: Terminal inverted repeat
Function: Contains motifs that are recognized and bound by the transposase. Essential for transposition.
Protein motifs:
TASE: Transposase
Function: Required for excision and insertion
Protein motifs: DDE
ORF2: ORF2 protein
Function: Protein of unknown function
Protein motifs:
TIR3: Terminal inverted repeat
Function: Contains motifs that are recognized and bound by the transposase. Essential for transposition.
Protein motifs:
Taxonomic group | Total elements |
---|---|
ANIMALIA | 16 |
PLANTAE | 344 |