Acts as a transcriptional repressor . Represses cAMP-responsive element (CRE)-mediated transcriptional activation . In addition, has a role in translesion DNA synthesis. Requires for UV-inducible RAD18 loading, PCNA monoubiquitination, POLH recruitment to replication factories and efficient translesion DNA synthesis . Plays a key role in the transcriptional regulation of T lymphocyte development (By similarity).
Nucleus . Nucleus, nucleoplasm . Localized in dot-like structures in the nucleus (PubMed:21706167). Colocalized with SMRT in nuclear bodies (PubMed:20797634). The sumoylated form is preferentially located in the nucleoplasm outside the nuclear bodies(PubMed:20797634). .
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