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Protein kinases are important regulators of intracellular signal transduction pathways and play critical roles in diverse cellular processes. TAK1, a member of the MAPKKK family, is essential for TNFα-induced NF-κB activation. Phosphorylation and Lys 63 -linked polyubiquitination (polyUb) of TAK1 are critical for its activation. However, whether TAK1 is regulated by polyubiquitination-mediated...
IκBα serves as a central anchoring molecule in the sequestration of NF-κB transcription factor in the cytoplasm. Ubiquitination-mediated IκBα degradation immediately precedes and is required for NF-κB nuclear translocation and activation. However, the precise mechanism for the deubiquitination of IκBα is still not fully understood. Using a proteomic approach, we have identified Ubiquitin Specific...
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