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Assaying Protein Kinase Activity with Radiolabeled ATP

Assaying Protein Kinase Activity with Radiolabeled ATP

Published on: May 26, 2017

Revealing eEF-2 kinase: recent structural insights into function.

Andrea Piserchio¹, Kevin N Dalby², Ranajeet Ghose³

¹Department of Chemistry and Biochemistry, The City College of New York, New York, NY 10031, USA.

Trends in Biochemical Sciences

|December 16, 2023

Summary

The eukaryotic elongation factor 2 kinase (eEF-2K) uniquely activates via calmodulin (CaM). Structural insights reveal how eEF-2K integrates signals to control translation based on cellular needs.

Keywords:

calmodulin-dependent kinase phosphorylation protein–protein interaction translational elongation α-kinase

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Published on: August 29, 2015

Area of Science:

Molecular Biology
Biochemistry
Structural Biology

Background:

Eukaryotic elongation factor 2 kinase (eEF-2K) regulates protein synthesis by phosphorylating eEF-2.
eEF-2K activation by calmodulin (CaM) differs from other CaM-dependent kinases (CAMK).

Purpose of the Study:

To provide recent structural insights into the unique activation mechanism of eEF-2K.
To examine how regulatory signals affect eEF-2K activation.
To identify key unanswered questions for future structure-function studies.

Main Methods:

Structural analysis of eEF-2K.
Investigation of regulatory signal effects on eEF-2K activation.

Main Results:

Detailed structural insights into the distinctive CaM-dependent activation of eEF-2K.
Understanding of how diverse signals modulate eEF-2K activity.

Conclusions:

eEF-2K possesses a unique activation mechanism involving CaM.
Further structural studies are needed to understand eEF-2K's integration of various cellular signals.
Answering these questions will clarify how eEF-2K aligns translation with cellular demands.