SmD

    In eukaryotic cells, the Sm-proteins B/B’, D1, D2, D3, E, F, and G form a heteroheptameric protein core shared between all uracil-rich small nuclear ribonucleoprotein (U-snRNP) complexes. SmD comprises equal masses of SmD1, SmD2, and SmD3. In addition, both SmD1 and SmD3 contain symmetrically dimethylated arginine residues, which represent a major epitope