Ubc13 is an E2 ubiquitin conjugating enzyme that lacks function without forming a heterodimer with Mms2. Ubc13 is involved in pathways that repair double stranded damage in DNA molecules. When bound to Mms2, Ubc13 will polyubiquinate PCNA, proliferating cell nuclear antigen. Many proteins that Ubc13 interacts with are RING finger proteins such as Traf6.
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Structural highlights
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