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- W4372332590 abstract "Abstract DNA‐protein crosslinks (DPCs) pose a serious threat to genome stability. The yeast proteases Wss1, 26S proteasome, and Ddi1 are safeguards of genome integrity by acting on a plethora of DNA‐bound proteins in different cellular contexts. The AAA ATPase Cdc48/p97 is known to assist Wss1/SPRTN in clearing DNA‐bound complexes; however, its contribution to DPC proteolysis remains unclear. Here, we show that the Cdc48 adaptor Ubx5 is detrimental in yeast mutants defective in DPC processing. Using an inducible site‐specific crosslink, we show that Ubx5 accumulates at persistent DPC lesions in the absence of Wss1, which prevents their efficient removal from the DNA. Abolishing Cdc48 binding or complete loss of Ubx5 suppresses sensitivity of wss1∆ cells to DPC‐inducing agents by favoring alternate repair pathways. We provide evidence for cooperation of Ubx5‐Cdc48 and Wss1 in the genotoxin‐induced degradation of RNA polymerase II (RNAPII), a described candidate substrate of Wss1. We propose that Ubx5‐Cdc48 assists Wss1 for proteolysis of a subset of DNA‐bound proteins. Together, our findings reveal a central role for Ubx5 in DPC clearance and repair." @default.
- W4372332590 created "2023-05-07" @default.
- W4372332590 creator A5044407096 @default.
- W4372332590 creator A5073233728 @default.
- W4372332590 creator A5087315133 @default.
- W4372332590 creator A5025363594 @default.
- W4372332590 date "2023-05-05" @default.
- W4372332590 modified "2023-10-09" @default.
- W4372332590 title "Ubx5‐Cdc48 assists the protease Wss1 at DNA‐protein crosslink sites in yeast" @default.
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