ArticleMolecular and cellular biochemistry2005
Cross talk between protein kinase CK2 and eukaryotic translation initiation factor eIF2beta subunit.
Article in Molecular and cellular biochemistry, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The long transcript of lncRNA TMPO-AS1 promotes bone metastases of prostate cancer by regulating the CSNK2A1/DDX3X complex in Wnt/β-catenin signaling.Cell death discovery · 2023Article
- Phosphorylation of maize eukaryotic translation initiation factor 5A (eIF5A) by casein kinase 2: identification of phosphorylated residue and influence on intracellular localization of eIF5A.The Journal of biological chemistry · 2010Article
- Phosphorylation of plant translation initiation factors by CK2 enhances the in vitro interaction of multifactor complex components.The Journal of biological chemistry · 2009Article
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Authors and funding
9 authors.
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Abstract
The beta-subunit of eukaryotic translation initiation factor eIF2 is a substrate and a partner for protein kinase CK2. Surface plasmon resonance analysis shows that the truncated form corresponding to residues 138-333 of eIF2beta (eIF2beta-CT) interacts with CK2beta as efficiently as full length eIF2beta, whereas the form corresponding to residues 1-137, which contains the CK2 phosphorylation sites, (eIF2beta-NT) does not bind. The use of different mutants and truncated forms of CK2alpha allowed us to map the basic segment K74-K83 at the beginning of helix alphaC and residues R191R195K198 in the p + 1 loop as the main determinants for the binding to eIF2beta-CT of either the isolated CK2alpha subunit or the CK2 holoenzyme. The presence of eIF2beta-CT stimulated the activity of CK2alpha towards the RRRAADSDDDDD peptide substrate; effect that was not observed with the CK2a K74-77A whose ability to bind to eIF2beta-CT is severely impaired. Gel filtration analysis confirmed the ability of CK2alpha to form complexes with eIF2beta-CT, and the contribution of the basic cluster in CK2alpha (K74-K77) in this association.
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Registered trials
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