Tudor domain found in Tudor domain-containing protein 3 (TDRD3) and similar proteins
TDRD3 is a scaffolding protein that specifically recognizes and binds dimethylarginine-containing proteins. In the nucleus, it acts as a coactivator; it recognizes and binds asymmetric dimethylation on the core histone tails associated with transcriptional activation (H3R17me2a and H4R3me2a) and recruits proteins at these arginine-methylated loci. In the cytoplasm, it may play a role in the assembly and/or disassembly of mRNA stress granules and in the regulation of translation of target mRNAs by binding Arg/Gly-rich motifs (GAR) in dimethylarginine-containing proteins. TDRD3 contains one Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.