| TIGD1 | |
|---|---|
| Gene | [TIGD1](/genes/tigd1) |
| UniProt ID | [Q8WWY9](https://www.uniprot.org/uniprot/Q8WWY9) |
| Molecular Weight | 52 kDa |
| Subcellular Localization | Nucleus |
| Protein Family | Tigger subfamily of Tc1/Mariner transposases |
| Brain Expression | Low to moderate |
TIGD1 (Tigger Transposable Element Derived 1) is a protein encoded by a gene derived from ancient tigger-type DNA transposons. While originally classified as a "junk DNA" remnant, TIGD1 has been conserved across mammals, suggesting it may have acquired a functional role. The protein contains a transposase-derived domain with predicted DNA-binding capability and is expressed in various tissues including the brain [1].
TIGD1 contains a characteristic domain:
Although derived from transposases, TIGD1 lacks critical catalytic residues required for transposition activity, indicating it has evolved into a non-catalytic DNA-binding protein [^2].
TIGD1 may function as a transcription factor:
TIGD1 represents an example of "domesticated" transposons:
Research on TIGD1 in neurodegeneration is still emerging:
While direct evidence is limited:
TIGD1 remains a relatively uncharacterized protein:
Limited information available:
TIGD1 is a transposase-derived protein that likely functions as a DNA-binding protein with transcriptional regulatory roles. While its direct involvement in neurodegenerative diseases remains unclear, it represents an interesting example of genome evolution and gene domestication. Further research is needed to clarify its neuronal functions.
TIGD1 expression varies across tissues:
In the brain:
Research using various models:
Key questions remain:
More research is needed to fully understand TIGD1's roles in neuronal function and disease.
Saha A, et al. Structure of domesticated transposases. Nucleic Acids Res. 2015;43(12):6119-6133. 2015. ↩︎