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The Transcriptional Factor Tcf-4 Contains Different Binding Sites for β-Catenin and Plakoglobin*
TLDR
It is shown here that Tcf-4 can be phosphorylated in vitro by protein kinase CK2 stoichiometrically in amino acids Ser-58–Ser-59– Ser-60, and that simultaneous binding of the two armadillo proteins to TCF-4 is possible.
Osmotic Stress Regulates the Stability of Cyclin D1 in a p38SAPK2-dependent Manner*
TLDR
It is found that p38SAPK2 phosphorylates cyclin D1 in vitro at Thr286 and that this phosphorylation triggers the ubiquitination of cyclin L1, which will help to understand the molecular mechanisms by which stress transduction pathways regulate the cell cycle machinery and take control over cell proliferation.
HAVCR/KIM-1 activates the IL-6/STAT-3 pathway in clear cell renal cell carcinoma and determines tumor progression and patient outcome.
TLDR
The results suggest that HAVCR/KIM-1 upregulation in tumors might represent a novel mechanism to activate tumor growth and angiogenesis and that pSTAT-3 S727 is an independent prognostic factor for ccRCC patients.
The regulatory beta subunit of protein kinase CK2 contributes to the recognition of the substrate consensus sequence. A study with an eIF2 beta-derived peptide.
TLDR
Results demonstrate that this peptide still displays phosphorylation features similar to full-length eIF2beta and the CK2 beta subunit also contributes to recognition of the protein substrate by establishing both polar and hydrophobic interactions with specificity determinants located downstream from the phosphoacceptor site.
Unbalanced activation of ERK1/2 and MEK1/2 in apigenin-induced HeLa cell death.
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