. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "rpb1_human"^^ . "POLR2A"^^ . "POLR2"^^ . "DNA-directed RNA polymerase III largest subunit"^^ . "DNA-directed RNA polymerase II subunit A"^^ . "RNA-directed RNA polymerase II subunit RPB1"^^ . . "DNA-directed RNA polymerase II subunit RPB1"^^ .