Tudor domain-containing protein 7 (TDRD7)

Tudor domain-containing protein 7 (TDRD7) is a highly conserved, multi-domain RNA-binding protein characterized by three *Tudor domains* and three *LOTUS domains*; the former typically recognize methylated arginine or lysine residues on proteins, while the latter are predicted to bind RNA and interact with DEAD-box helicases[1][4][9]. TDRD7 is a critical component of ribonucleoprotein (RNP) assemblies called chromatoid bodies in developing sperm, where it orchestrates post-transcriptional regulation, suppresses retrotransposons (such as LINE1), and ensures spermatogenesis[2][7]. In somatic tissues, especially the ocular lens, TDRD7 is involved in the post-transcriptional control of gene expression required for lens fiber cell differentiation and maintenance; deficiency leads to congenital and age-related cataracts as well as, in some cases, glaucoma[6][9]. Additionally, TDRD7 has been shown to function as an interferon-stimulated antiviral gene by interacting with AMPK and modulating autophagy pathways[3]. There are currently no drugs known to directly modulate TDRD7, and it is not considered a therapeutic target at this time. Deficiency or mutation in TDRD7 causes significant developmental defects, but therapeutic modulation is not established.

Other names

PCTAIRE2-binding proteinTrapTudor repeat associator with PCTAIRE-2CATC4TRAPepididymis secretory sperm binding proteintudor repeat associator with PCTAIRE 2PCTAIRE2BP