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Mutations in the Kit receptor tyrosine kinase gene (KIT), which result in constitutive activation of the protein (KIT), are causally related to the development of gastrointestinal stromal tumors (GISTs). Imatinib, a targeted anticancer drug, exerts a therapeutic effect against GISTs by repressing the kinase activity of KIT. Long-term administration of this drug, however, causes the emergence of imatinib-resistant...
Vif is essential for HIV-1 replication in T cells and macrophages. Vif recruits a host ubiquitin ligase complex to promote proteasomal degradation of the APOBEC3 restriction factors by poly-ubiquitination. The cellular transcription cofactor CBFβ is required for Vif function by stabilizing the Vif protein and promoting recruitment of a cellular Cullin5-RING ubiquitin ligase complex. Interaction between...
The phosphorylation of heterogeneous nuclear ribonucleoprotein K (hnRNP K) is thought to play an important role in cell regulation and signal transduction. However, the relationship between hnRNP K phosphorylation and cellular events has only been indirectly examined, and the phosphorylated forms of endogenous hnRNP K have not been biochemically characterized in detail. In this study, we extensively...
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