. . . . . . . . . . . . . . . . . . . . . . . . . "uba1_human"^^ . "Ubiquitin-activating enzyme E1"^^ . "A1S9T"^^ . "UBE1"^^ . "UBA1"^^ . "Protein A1S9"^^ . . "Ubiquitin-like modifier-activating enzyme 1"^^ .