Synonyms:B aggressive lymphoma protein, BAL, BAL1, PARP 9, PARP9, Poly [ADP ribose] polymerase 9 Background:In concert with DTX3L plays a role in PARP1-dependent DNA damage repair. PARP1-dependent PARP9/BAL1-DTX3L-mediated ubiquitination promotes the rapid and specific recruitment of 53BP1/TP53BP1, UIMC1/RAP80, and BRCA1 to DNA damage sites. Involved in inducing the expression of IFN-gamma-responsive genes.