. . . . . . . . . . . . . . . . . . . . . . . . . . . . "rpb4_human"^^ . "POLR2D"^^ . "DNA-directed RNA polymerase II subunit D"^^ . "RNA polymerase II 16 kDa subunit"^^ . . "DNA-directed RNA polymerase II subunit RPB4"^^ .